pollyanna wrote:Have never heard of police Top Trump cards

It was aminly a 1980's fad Polly, promoted endlessly in television commercials.
http://en.wikipedia.org/wiki/Top_TrumpsTop Trumps was a popular children's card game in the United Kingdom in the 1970s and 1980s, especially amongst boys, for whom it was a popular playground pastime. The topics tended to reflect this, and included military hardware, modes of transport and racing cars. The packs tended to be priced so that children could collect new packs by saving pocket money for a few weeks.
The original Top Trumps were launched in 1977, with eleven different packs published by a company named Dubreq, also known for the Stylophone. Dubreq was taken over by Waddingtons in 1982, and they continued manufacturing packs until the early 1990s. The packs from this period are now collectible.