VP8,
that certainly looks like the ones. But I also seem to remember dropping ones without a cab too. My pics of them have gone 'walkies'.
I thought the Guy Martin DZ was Abingdon. It looked vaguely familiar from when I was there with JATE before we moved to Brize Norton. We only dropped ULLA/free drop on the airfield but of course PTS had been there and used Weston on the Green for the training drops including the balloon which I found far more of a fright than the a/c jump.