the href attribute for the fb:like tag looks off:
<fb:like href="plugins/functions/http%3A%2F%2Fdinkyfingerprint.co.uk%2Fproducts.php %3Fdinky%3Dproduct-detail%26result%3D60"
that should be:
<fb:like href="http%3A%2F%2Fdinkyfingerprint.co.uk%2Fproducts.php %3Fdinky%3Dproduct-detail%26result%3D60"