Pedigree produced Tommy Gunn between 1966 and 1968.
Then production ceased.
Zodiac reintroduced Tommy Gunn later in 1978 up to 1985 (maybe a bit later but I have no info).
The quality wasn't the same and some pieces are easily distinguishable.First the clothes.
Left : Pedigree era, with
green painted buttons,
green is a very little bit lighter,
stitches with brown thread.
Right : Zodiac era, with
printed blue pockets,
green is a very little bit darker,
stitches with blue thread.