Bank of England notes retain their value for all time. If your local bank, building society or Post Office won’t accept them, they can be exchanged at the Bank of England in London.
Source: The Bank of England (www.bankofengland.co.uk)
BA Amex credit card is a great way to collect BA Miles, as you earn 1 BA Mile for every £1 you spend. If you redeem your points on a BA flight and have spent £20,000 a year, you will receive another ticket for a companion.