The recording of further guitar overdubs and the final mixing took place at Rockfield Studios in Wales with producer Dave Goodman in late May 1978.

[2] This original version of "Silly Thing" appeared on the movie soundtrack album of The Great Rock 'n' Roll Swindle and was used for the single in New Zealand, France and Japan.

[3] In the second week of March 1979, Jones and Cook went into Wessex Studios in London[4] with engineer Bill Price and recorded a new version of the song.

On this version, bass guitar was played by Andy Allen of the Lightning Raiders, who later in the year formed The Professionals with Cook and Jones.

The subsequent movie sequence of Tudor-Pole performing the song was filmed in one day with actress Irene Handl at Rainbow Theatre[6] in London.