PKPF68-77 Thank you!! I was hoping they'd leave a 6ft slot somewhere but, alas, it's all concrete now.
trident 3A.. OK. I think that's an ex-colleage of mine so I'll try and find out more. There are some old pics on my site:
http://brendan-mccartney.fotopic.net
and on the Air Britain site at:
http://abpic.co.uk/results.php?q=hea...atest&limit=10