Financial Performance Update H1'23

Customer deposits were resilient, supported by successful ISA products, although increase in time and reduction in demand reflects customers seeking higher yields Total customer funds (£ bn) 米 203.1 196.5 197.1 198.0 197.2 Jun-23 Jun-22 YoY (%) QoQ (%) Demand 165.5 177.6 -6.8 -3.6 Time¹ 25.5 12.4 105.4 27.8 Total deposits 191.0 190.0 0.5 -0.3 Mutual Funds² 6.2 6.5 -4.5 -2.5 Total customer funds 197.2 196.5 0.4 -0.4 Jun-22 Sep-22 Dec-22 Mar-23 Jun-23 Santander Group criteria. (1) Time deposits include ISAs. (2) Third-party off-balance sheet assets originated by Santander Asset Management in the United Kingdom. 11

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