Red in colour ... small build .. smallish head. Very very friendly. Stray in the Warrington area.

We have a couple of possibles matching that description:

LSUK Ref LSOB 16/8/B:

Staffordshire Bull Terrier - bitch (entire)
Smooth coated
Red with white from under chin, neck, chest to belly. White tips to front toes.
Rose ears.
Height: 14 & 1/2"
Age: 5 years
Went missing from: Manchester Date on 8/08/99
Circumstance of loss: Stolen from locked kennels

LSUK Ref LSOB 655/3/D:

Staffordshire Bull Terrier - bitch (entire)
Smooth coated
Red with white chest, white part of way up right front leg. Small bit of white on left front paw.
Stocky build. Friendly
Age: 3 y.o.
Went missing from: Lancing, West Sussex on Date 22/3/01