FF43 Keep of the Lich Lord. Puffin 1990. First edition 1990 aka Dragon v.3.
Poor condition overall. Cover damage front and back, penned price, ex-libris stamps throughout, damage to spine (that new owner may be able to repair after a fashion), Inside cover has prev. owner’s name and masking tape repair and texta-d scribble inside back cover. Adventure sheet is unused though.
More info on Keep of the Lich Lord see FF wiki entry