FRN Variable Rate Fix

Santander UK PLC

Issue of GBP 1,000,000,000.00

Floating Rate Covered Bonds due September 2029

Series No 89 Tranche 1 MTN

ISSUE NAME.

Our Ref. MR5459

ISIN Code. XS2892385225

TOTAL INTEREST AMT.

CURRENCY CODE. GBP

DAY BASIS. ACTUAL/365 FIXED (A005)

NUM OF DAYS. 92

INTEREST RATE. 4.6389 PCT

VALUE DATE. 12/09/2025

INTEREST PERIOD. 12/06/2025 TO 12/09/2025

GBP 11,692,569.86

POOL FACTOR. N/A

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