Hi Jane

Firstly, I assume you are talking about the insects rather than the pop group (yes, I know the pop group is spelt differently, but I thought I'd mention it in case anyone else does ).

There are very few chips in the UK with anything other than logos and names, but there is one set that I've posted (a poor) scan of below which is close. I don't know if there are any more of these Grosvenor Millennium chips, and if there are then there may be a beatle. The poor scan (the black one - the butterfly) is because the chip is in a keyring and I haven't tried to take it out yet!

Hope this is of use

Jason