In reply to Sabrina Brooke:
Hi Sabrina.
As Oakapple says, Cheesewring Guide is great and comprehensive for Helman and still very much available, from Waterstones in Truro along with regular climbing shops. Boulder Britain is also great but being selective only really provides enough coverage for a couple of visits.
There is a Cornish Select bouldering Guide that’s currently being put together by myself and a friend, but I’m afraid the Helman topo isn’t done yet otherwise I’d send you a pdf.
Either of the guides mentioned are a good bet.