Lennard Pearce played Grandad; Buster Merryfield played Uncle Albert.
Grandad's final appearance was in the last episode of Series 3, first broadcast on Christmas Day 1983. Lennard Pearce suffered a fatal heart attack on 15 December 1984, soon after filming for Series 4 had begun. He'd already appeared in some scenes of the first episode (entitled Hole in One). Two extra episodes were written; the second new episode (first broadcast on 7 March 1985) featured Grandad's funeral and introduced Uncle Albert, who was retrospectively written into what was now the third episode of Series 4, to replace Grandad.
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