£50 banknotes carrying the portrait of Sir John Houblon were withdrawn from circulation on 30 April 2014.
Only the £50 banknote featuring Matthew Boulton and James Watt, which was introduced in November 2011, now holds legal tender status.
Most banks and building societies will continue to accept them for deposit to customer accounts; however, agreeing to exchange the notes is at the discretion of individual institutions.
Barclays, RBS, NatWest, Ulster Bank and the Post Office have all agreed to exchange Houblon £50 notes for members of the public - up to the value of £200 - until 30 October 2014.
The Bank of England will continue to exchange Houblon £50 notes, as it would for any other Bank of England note which no longer has legal tender status.
For more information see our withdrawal of the Houblon £50 note frequently asked questions.