Unlikely, but possible, Dixons had a long standing contract with 3M for film going back to the 60's.
There's something about the "Colourprint 2" part, I think Boots sold their first C41 film (also 3M) with that part in the name as well. If I was in the UK I'd look in an old Amateur Photographer and see what films Dixon's were listing.
Labs used to have a chart telling them what films were C22 or C41, or other because not all own brands put the process on the films.
Ian