Shot on location at Butlin's Barry Island in Wales; the Delta and the Bannermen: Part One (1987) was also filmed there in the same year. That story, like Bloody New Year, has a 1950s theme.
When the teens regroup and find the hotel's theatre, it is screening the film Fiend Without a Face (1958).
[December 2022] The Popular Screen magazine seen, in the pub, was dated January 1960 at the price of 25¢ (a value of around $2.40 today) and had Edd Byrnes and Sandra Dee on its front cover.