The next and last of the current series of Fake or Fortune?
investigates several lost works by Thomas Gainsborough, one of Britain's most famous artists. Dr Bendor Grosvenor has been trawling the Your Paintings
catalogue and he and Philip Mould believe they have identified several paintings by Gainsborough that are attributed to unknown artists. This painting of Joseph Gape, Mayor of St Albans,
is one of them. Can the team prove it? Find out on Sunday evening at 6pm on BBC One (CLICK