NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OF SUCH JURISDICTION

FOR IMMEDIATE RELEASE

2 November 2018

RECOMMENDED ACQUISITION

OF

NEX GROUP PLC ("NEX")

BY

CME LONDON LIMITED ("BIDCO")

AND

CME GROUP INC. ("CME")

SCHEME OF ARRANGEMENT BECOMES EFFECTIVE

On 29 March 2018, the boards of NEX and CME announced that they had reached an agreement on the terms of a recommended acquisition of the entire issued and to be issued share capital of NEX (the "Acquisition") to be effected by means of a scheme of arrangement under Part 26 of the Companies Act 2006 (the "Scheme") and subject to the terms and conditions set out in the scheme document relating to the Acquisition published on 25 April 2018 (the "Scheme Document").

On 1 November 2018, NEX and CME announced that the High Court of Justice in England and Wales had sanctioned the Scheme at the Court Hearing held earlier that day.

NEX and CME are pleased to announce that the Acquisition has now completed in accordance with its terms. The Scheme has become effective as of today, 2 November 2018, following the sanction of the Scheme by the Court on 1 November 2018 and the delivery of the Court order to the Registrar of Companies earlier today.

Unless otherwise defined, all capitalised terms used in this announcement shall have the meaning given to them in the Scheme Document.

A copy of CME's US press release relating to the completion of the Acquisition will be available on CME's website at www.cmegroup.com/nex-group.

Settlement of the Consideration

As set out in the Scheme Document, for NEX Scheme Shareholders who held their NEX Shares in uncertificated form, CME CDIs linked to the underlying New CME Shares will be credited to their CREST account as soon as practicable on or after 5 November 2018 (and in any event within 14 days of this announcement).

In the case of NEX Scheme Shareholders who held their NEX Shares in uncertificated form, Bidco shall procure that settlement of any Cash Consideration shall be paid by means of an assured payment obligation created in favour of the payment bank of the persons entitled thereto in accordance with the CREST assured payment arrangements for the sums payable to them respectively (including any amounts due in respect of New CME Shares not allotted to Overseas Shareholders and in respect of fractional entitlements) within 14 days of this announcement.

In the case of NEX Scheme Shareholders who held their NEX Shares in certificated form, statements of entitlement to New CME Shares held through DRS will be despatched within 14 days of this announcement and Bidco shall procure the despatch to the persons entitled thereto of cheques for the sums payable to them as Cash Consideration (including any amounts due in respect of New CME Shares not allotted to Overseas Shareholders and in respect of fractional entitlements) within 14 days of this announcement.

Enquiries:

Goldman Sachs International is also acting as a financial adviser to NEX, and Merrill Lynch International ("BofA Merrill Lynch") is acting as corporate broker to NEX. Clifford Chance LLP are retained as legal advisers to NEX.  Skadden, Arps, Slate, Meagher & Flom are retained as legal advisers to CME.

Important notices

This announcement is for information purposes only and is not intended to and does not constitute, or form any part of, an offer to sell or an invitation to purchase or subscribe for any securities or the solicitation of any vote or approval in any jurisdiction pursuant to the Acquisition or otherwise. This announcement does not constitute a prospectus or a prospectus equivalent document.

Citigroup Global Markets Limited ("Citi"), which is authorised by the PRA and regulated in the United Kingdom by the FCA and the PRA, is acting as joint lead financial adviser to NEX and for no one else in connection with matters set out in this announcement and will not be responsible to anyone other than NEX for providing the protections afforded to its clients or for providing advice in relation to matters set out in this announcement.

Evercore Group L.L.C. ("Evercore LLC"), which is a securities broker-dealer registered with the SEC and subject to regulation by the SEC and the Financial Industry Regulatory Authority ("FINRA"), together with its affiliate Evercore Partners International LLP who is providing independent financial advice to the NEX Directors for the purposes of Rule 3 of the Takeover Code ("EPI LLP") (together with Evercore LLC, "Evercore"), which is authorised and regulated in the United Kingdom by the FCA, are acting as joint lead financial adviser for NEX and no one else in connection with matters set out in this announcement, and will not be responsible to anyone other than NEX for providing the protections afforded to clients of Evercore or for providing advice in relation to matters referred to in this announcement. Neither Evercore nor any of its subsidiaries, branches or affiliates owes or accepts any duty, liability or responsibility whatsoever (whether direct or indirect, whether in contract or in tort, under statute or otherwise) to any person who is not a client of Evercore in connection with this announcement, any statement contained therein or otherwise. Apart from the responsibilities and liabilities, if any, which may be imposed on Evercore by FSMA, or the regulatory regime established thereunder, or under the regulatory regime of any jurisdiction where exclusion of liability under the relevant regulatory regime would be illegal, void or unenforceable, neither Evercore nor any of its affiliates accepts any responsibility or liability whatsoever for the contents of this announcement, and no representation, express or implied, is made by it, or purported to be made on its behalf, in relation to the contents of this announcement, including its accuracy, completeness or verification of any other statement made or purported to be made by it, or on its behalf, in connection with NEX or the matters described in this announcement. To the fullest extent permitted by applicable law, Evercore and its affiliates accordingly disclaim all and any responsibility or liability whether arising in tort, contract or otherwise (save as referred to above) which they might otherwise have in respect of this announcement or any statement contained therein.

Goldman Sachs International, which is authorised by the PRA and regulated by the FCA and the PRA in the United Kingdom, is acting exclusively for NEX and no one else in connection with the Acquisition and will not be responsible to anyone other than NEX for providing the protections afforded to clients of Goldman Sachs International or for providing advice in connection with the Acquisition or the matters described in this announcement or any transaction or arrangement referred to herein.

BofA Merrill Lynch, a subsidiary of Bank of America Corporation, is authorised by the PRA and regulated by the FCA and the PRA in the U.K. BofA Merrill Lynch is acting exclusively as corporate broker to NEX and no one else in connection with the Acquisition and shall not be responsible to anyone other than NEX for providing the protections afforded to clients of BofA Merrill Lynch nor for providing advice in relation to such matters.

J.P. Morgan Securities LLC, together with its affiliate J.P. Morgan Securities plc (which conducts its U.K. investment banking business as J.P. Morgan Cazenove and which is authorised in the United Kingdom by the Prudential Regulation Authority (the "PRA") and regulated in the United Kingdom by the PRA and the Financial Conduct Authority) ("J.P. Morgan") is acting exclusively as joint financial adviser for CME and financial adviser to Bidco and no one else in connection with the Acquisition and will not regard any other person as its client in relation to the Acquisition and will not be responsible to anyone other than CME and Bidco for providing the protections afforded to the clients of J.P. Morgan, nor for providing advice in relation to any matter referred to herein.

Barclays Bank PLC, acting through its Investment Bank ("Barclays") (which is authorised in the United Kingdom by the Prudential Regulation Authority (the "PRA") and regulated in the United Kingdom by the PRA and the Financial Conduct Authority) is acting exclusively as joint financial adviser for CME and no one else in connection with the Acquisition and will not be responsible to anyone other than CME for providing the protections afforded to the clients of Barclays, nor for providing advice in relation to any matter referred to herein.

Information for overseas shareholders

The release, publication or distribution of this announcement in jurisdictions other than the United Kingdom may be restricted by law and therefore any persons who are subject to the laws of any jurisdiction other than the United Kingdom (including Restricted Jurisdictions) should inform themselves about, and observe, any applicable legal or regulatory requirements. Any failure to comply with applicable legal or regulatory requirements of any jurisdiction may constitute a violation of securities laws in that jurisdiction. This announcement has been prepared for the purpose of complying with English law and the Takeover Code and the information disclosed may not be the same as that which would have been disclosed if this announcement had been prepared in accordance with the laws of jurisdictions outside England.

Unless otherwise determined by Bidco or CME or required by the Takeover Code, and permitted by applicable law and regulation, the Acquisition will not be made available, directly or indirectly, in, into or from a jurisdiction where to do so would violate the laws in that jurisdiction, and no person may vote in favour of the Acquisition by any such use, means, instrumentality or form within any jurisdiction if to do so would constitute a violation of the laws of that jurisdiction. Accordingly, copies of this document and all documents relating to the Acquisition are not being, and must not be, directly or indirectly, posted or otherwise forwarded, distributed or sent in, into or from a jurisdiction where to do so would violate the laws in that jurisdiction, and persons receiving this document and all documents relating to the Acquisition (including custodians, nominees and trustees) must not post or otherwise distribute or send them in, into or from such jurisdictions where to do so would violate the laws in that jurisdiction. Any person (including, without limitation, any custodian, nominee and trustee) who would, or otherwise intends to, or who may have a contractual or legal obligation to, forward this document and/or any other related document to any jurisdiction outside the UK should inform themselves of, and observe, any applicable legal or regulatory requirements of their jurisdiction.

The availability of the New CME Shares under the Acquisition to NEX Shareholders who are not resident in the United Kingdom may be affected by the laws of the relevant jurisdictions in which they are resident. Persons who are not resident in the United Kingdom or who are subject to the laws and/or regulations of another jurisdiction should inform themselves of, and should observe, any applicable requirements.

Further details in relation to Overseas Shareholders are contained in the Scheme Document.

Additional information for U.S. shareholders

The Acquisition relates to the shares of a U.K. company and is being made by means of a scheme of arrangement provided for under Part 26 of the Companies Act 2006. The Acquisition, implemented by way of a scheme of arrangement, is not subject to the tender offer rules or the proxy solicitation rules under the U.S. Exchange Act. Accordingly, the Acquisition is subject to the disclosure requirements and practices applicable to a scheme of arrangement involving a target company in the U.K. listed on the London Stock Exchange, which differ from the disclosure requirements of U.S. tender offer and proxy solicitation rules.

The New CME Shares to be issued pursuant to the Acquisition have not been registered under the U.S. Securities Act, and may not be offered or sold in the U.S. absent registration or an applicable exemption from the registration requirements of the U.S. Securities Act. The New CME Shares to be issued pursuant to the Acquisition will be issued pursuant to the exemption from registration provided by Section 3(a)(10) under the U.S. Securities Act.

Neither the SEC nor any U.S. state securities commission has approved or disapproved of the New CME Shares to be issued in connection with the Acquisition or determined if this announcement is accurate or complete. Any representation to the contrary is a criminal offence in the U.S.

It may be difficult for U.S. NEX Shareholders and NEX ADR Holders to enforce their rights and any claim arising out of the U.S. federal securities laws, because NEX is located in a non-U.S. country, and some or all of its officers and directors are residents of a non-U.S. country. U.S. NEX Shareholders and NEX ADR Holders may not be able to sue a non-U.S. company or its officers or directors in a non-U.S. court for violations of the U.S. securities laws. Further, it may be difficult to compel a non-U.S. company and its affiliates to subject themselves to a U.S. court's judgment.

U.S. NEX Shareholders and NEX ADR Holders also should be aware that the transaction contemplated herein may have tax consequences in the U.S. and, that such consequences, if any, are not described herein. U.S. NEX Shareholders and NEX ADR Holders are urged to consult with legal, tax and financial advisers in connection with making a decision regarding this transaction.

Forward-looking statements

This announcement contains certain forward-looking statements with respect to CME, Bidco, NEX and the Combined Company.  These forward-looking statements can be identified by the fact that they do not relate only to historical or current facts.  Forward-looking statements often use words such as "anticipate", "target", "expect", "estimate", "intend", "plan", "goal", "believe", "aim", "will", "may", "would", "could" or "should" or other words of similar meaning or the negative thereof.  Forward-looking statements include statements relating to the expected closing of CME and Bidco's proposed acquisition of NEX.

These forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual timing of the closing to be materially different from the timing expressed or implied by such forward-looking statements.  These forward-looking statements are based largely on the expectations of CME, Bidco and NEX and are subject to a number of risks and uncertainties.

All subsequent oral or written forward-looking statements attributable to CME, Bidco, NEX, the Combined Company or any persons acting on their behalf are expressly qualified in their entirety by the cautionary statement above. None of CME, Bidco nor NEX undertakes any obligation to update publicly or revise forward-looking statements, whether as a result of new information, future events or otherwise, except to the extent legally required.

The form 10-K of CME for the year ended December 31, 2017 contains additional information regarding forward-looking statements with respect to CME.

Publication on website

A copy of this announcement will be made available, subject to certain restrictions relating to persons resident in Restricted Jurisdictions, on CME's website at www.cmegroup.com/nex-group and on NEX's website at https://www.nex.com/offer, by no later than 12.00 noon (London time) on the date following publication of this announcement. For the avoidance of doubt, the contents of both websites are not incorporated into and do not form part of this announcement.

If you are in any doubt about the contents of this announcement or the action you should take, you are recommended to seek your own independent financial advice immediately from your stockbroker, bank manager, solicitor, accountant or independent financial adviser duly authorised under the Financial Services and Markets Act 2000 (as amended) if you are resident in the United Kingdom or, if not, from another appropriately authorised independent financial adviser.

About CME

As the world's leading and most diverse derivatives marketplace, CME Group (www.cmegroup.com) is where the world comes to manage risk.  CME Group exchanges offer the widest range of global benchmark products across all major asset classes, including futures and options based on interest rates, equity indexes, foreign exchange, energy, agricultural products and metals.  Around the world, CME Group brings buyers and sellers together through its CME Globex® electronic trading platform.  CME Group also operates one of the world's leading central counterparty clearing providers through CME Clearing, which offers clearing and settlement services across asset classes for exchange-traded and over-the-counter derivatives.  CME Group products and services ensure that businesses around the world can effectively manage risk and achieve growth.

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