At the time of the World Cup, Watney Mann were one of the largest breweries in England well known for the Red Barrel logo and associated advertising. For the tournament they introduced a new drink the World Cup Special Pale Ale which would feature artwork showing World Cup Willie holding the Red Barrel. 

The beer bottle came in 2 sizes though I have seen three different label types. The showcard and bar towel don't feature Willie but fit in nicely with the range