Overnight Interbank Average Rate in the United Kingdom remained unchanged at 3.73 percent on Wednesday December 31. Overnight Interbank Average Rate in the United Kingdom averaged 2.80 percent from 1997 until 2025, reaching an all time high of 8.56 percent in October of 1998 and a record low of 0.04 percent in December of 2020. source: Bank of England

Related	Last	Previous	Unit	Reference
Bank Lending Rate	8.61	8.63	percent	Dec 2025
Banks Balance Sheet	4664216.00	4676380.00	GBP Million	Dec 2025
Central Bank Balance Sheet	795797.00	791667.00	GBP Million	Feb 2026
Deposit Interest Rate	3.75	3.75	percent	Jan 2026
Foreign Exchange Reserves	224754.00	222489.00	USD Million	Dec 2025
BoE Interest Rate	3.75	3.75	percent	Feb 2026
Interest rate on new mortgages	4.15	4.20	percent	Dec 2025
Interest Rate on Outstanding Mortgages	3.92	3.90	percent	Dec 2025
Lending Rate	4.25	4.25	percent	Jan 2026
Loans to Private Sector	2828159.00	2781954.00	GBP Million	Sep 2025
Money Supply M0	102522.00	102722.00	GBP Million	Dec 2025
Money Supply M1	2272711.00	2281112.00	GBP Million	Dec 2025
Money Supply M2	3194389.00	3198382.00	GBP Million	Dec 2025
Money Supply M3	3745533.00	3744626.00	GBP Million	Dec 2025
M4 Money Supply MoM	3212665.00	3201990.00	GBP Million	Dec 2025
Overnight Interbank Average Rate	3.73	3.73	percent	Dec 2025

United Kingdom Sterling Overnight Average Rate SONIA

SONIA (Sterling Overnight Interbank Average Rate) is based on actual transactions and reflects the average of the interest rates that banks pay to borrow sterling overnight from other financial institutions and other institutional investors. Financial businesses and institutions use SONIA in a variety of ways. For example, to calculate the interest paid on swap transactions and sterling floating rate notes . SONIA is used to value around £30 trillion of assets each year. SONIA is the Working Group on Sterling Risk Free Reference Rates’ preferred benchmark for the transition to sterling risk-free rates from Libor.