Q1'22 Financial Update

Customer loans up 2% as Santander UK increased its share within a strong mortgage market Total customer loans¹ (GBP bn) + 212.4 208.1 208.2 209.2 208.1 Mar-22 Mar-21 YoY (%) QoQ (%) Individuals² 190.4 179.5 6.1 2.7 o/w Mortgages³ 179.9 169.7 6.0 2.1 SMES 3.2 4.0 -19.7 -8.0 Corporates 18.8 20.4 -7.7 -2.6 CIB 0.0 4.2 -100.0 Total customer loans 212.4 208.1 2.1 2.1 Mar-21 Jun-21 Sep-21 Dec-21 Mar-22 Santander Group criteria. (1) Excludes reverse repos. (2) Includes Private Banking. (3) Mortgages refers to residential retail mortgages only and excludes social housing and commercial mortgage assets. 11

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