 After the success of " Getting Sam Home " , a second film was made in 1986 . Titled " Uncle of the Bride " , the film featured the introduction of Michael Aldridge as Seymour , the new third man of the trio . The plot centred on the marriage of Seymour 's niece , Glenda ( Sarah Thomas ) , to Barry ( Mike Grady ) . Also making her first appearance in the film was Thora Hird as Seymour 's sister and Glenda 's mother , Edie , as well as re @-@ introducing Gordon Wharmby as Edie 's husband Wesley , previously seen in a popular one @-@ off appearance . The second film proved a success and all four new characters were carried over to the show beginning with the ninth series in 1986 . 
