the cc uk module is missing an important piece of code.. ie the ccv will not be emailed without it
add this
$order->info['cc_expires'] = $_POST['cc_expires'];
after
$order->info['cc_number'] = substr($_POST['cc_number'], 0, 4) . str_repeat('X', (strlen($_POST['cc_number']) - 8)) . substr($_POST['cc_number'], -4);
in includes/modules/payment/cc_uk.php
around line 498