NEX : Q3 Trading Statement

§ Q3 Group revenue up 3% (YTD up 6%)

§ NEX Markets Q3 revenue down 10% (YTD up 1%)

§ NEX Optimisation Q3 revenue up 10% (YTD up 6%)

§ Transformation programme on track to deliver £40 million of cost savings

§ More than 380 new contracts signed for regulatory reporting services

London, 1 February 2018- NEX Group plc ('NEX') (NXG.L), a financial technology company at the centre of global markets, announces today its trading statement for the third quarter ended 31 December 2017. Full year results for the year ended 31 March 2018 will be announced on 22 May 2018.

Michael Spencer, Group Chief Executive Officer of NEX, said: 'Market volatility was low during the quarter in contrast with last year when volumes picked up in the aftermath of the US presidential election. Nevertheless we are making headway with our transformation programme as we continue to reshape NEX for tomorrow's financial markets and reduce costs.

'Since the beginning of January, our markets have been noticeably more active as FX volatility has increased from historic lows. However, it is still too early to assume with any confidence that the previous and prolonged period of subdued market conditions has come to an end. We are meanwhile on track to deliver the expected improvement in NEX Optimisation's operating margin in the second half of the year and these two factors give us confidence in the outlook for the current year.'

Group revenue for the third quarter to 31 December 2017 increased by 3% on a constant currency basis (5% on a reported basis).

NEX Markets revenue decreased by 10% on a constant currency basis (9% on a reported basis) during the third quarter compared to the same period last year as the comparable period included the increased volatility following the US election and the phasing of the CFETS contract revenue recognition. BrokerTec continues to preserve its market share and EBS has shown robust growth in both NDF and CNH volumes.

NEX Optimisation revenue increased by 10% on a constant currency basis (13% on a reported basis) during the third quarter compared to the same period last year. This was underpinned by a strong performance from both the triReduce compression service and the triResolve reconciliation solution which was partly offset by ongoing trading pressure from Reset as the current interest rate environment continues to deliver low short dated interest rate volatility.

The MiFID II regulatory reporting solution went live on 3 January with more than 380 new contracts with an annualised revenue value of more than £10 million.

The United States has enacted a major overhaul of its tax code which includes a reduction in the federal tax rate. Based on preliminary interpretation of the new legislation, NEX's effective tax rate is expected to fall to 22-24% next year from 26-28% this year.

Given the recent increases in market volatility, NEX has disclosed its January NEX Markets volumes, calculated on a 21-day basis below. The full end-of-month volumes calculated on a 22-day basis will be issued on Friday 2 February 2018.

ENDS

Investors & Analysts Conference Call:

This will be hosted by Michael Spencer at 08:00am on Thursday 1 February 2018

Dial in number: +44 (0)20 3003 2701

Access Code: 6315363#

A recording of this call will be available atwww.nex.com

NEX Markets January Volumes:

The average daily volume figures for January 2018 are based on month-to-date calculation from 2-30 January 2018.

NEX Group plcoffers customers better ways to execute trades and manage risk. Our products and services underpin the entire trade lifecycle pre-, during and post-execution. Our electronic trading platforms are industry standards. Customers use our lifecycle management and information services to optimise portfolios, control risk and reduce costs. We partner with emerging technology companies to bring greater efficiency, transparency and scale to the world's capital markets. NEX is headquartered in London with offices worldwide. For more information visit www.nex.com