LSE Investor Presentation Deck

Aligned efficiency initiatives support annual run rate cost synergies in excess of £350m Synergies Year 1 Year 3 Year 5 50% Corporate & Employee- Related Efficiencies (1) 30% Technology (1) 20% Property & Other (1) Target run rate phasing 25% 70% 100% One-time cash costs to achieve: c.£550m (2) (1.6x run rate) Note: (1) Synergy breakdown rounded to the nearest tenth (2) The majority of the cost to achieve synergies is expected to be incurred in the first two years following Completion London Stock Exchange Group DIEGH FREQUE Cost synergies delivered through wide ranging efficiency programme: Corporate and employee-related efficiencies: Removing duplication and leveraging wider geographic footprint, while continuing to invest in growth; delayering, capturing associated flow-through to variable compensation - Technology: De-duplication of services and applications while adopting the best of both organisations' capabilities and maintaining resiliency, data centre rationalisation Property and other: Consolidation of property footprint in common locations, seeking economies of scale on supplier contracts, depreciation benefits from technology and property de-duplication These synergies are separate from and in addition to Refinitiv's previously announced and ongoing $650m cost savings programme LSEG and Refinitiv have a strong track record of execution and creation of shareholder value Page 30

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