LSE Results Presentation Deck

Building a more agile, efficient and scalable business for the future WALSEG DICTUM HEVE FACTUR One-time costs of realising our synergy targets £291m of costs to achieve (CTA) in 2021 £205m of CTA recognised as non-operating costs £86m of CTA recognised as capex(1) The one-time costs relating to the realisation of the additional £50m cost synergies include the cost of exiting multi-year leases in order to optimise our property footprint. These costs are partly offset by gains on an associated property disposal. Synergy type Cost synergies Original £350m target Updated £400m target (gross) Associated property disposal Updated £400m target (net) Revenue synergies Total £225m target Total synergies 350 400 400 225 Cost to achieve 550 775 133 642 180 Ratio 1.6x 1.9x 1.6x 0.8x ☐ Expect to incur the majority of remaining CTA over the course of 2022 and 2023, with -70% of CTA to be treated as non-underlying operating expenses, and ~30% as capex Note: CTA guidance stated on a constant currency basis. (1) Capex associated with the synergy programme only; does not include Capex related to the separation of the Borsa Italiana Group or other non-BAU Capex 50

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