Longchop,
Do your homework before deciding to join Excel.....you will probably need a 757/767 type rating but not necesarily time on type though....don't know about the 737 pool.
The Chief pilot is a guy named Alan Pattison.....and unfortunately I don't have the contact numbers anymore but you can try reaching Jerry O'Sullivan of Airborne at Stoner House in Crawley and he can give you the lowdown on the situation there. If you are that keen in getting into there then best of luck to you....
Check out pilot career center.com and look for UK airlines....might find some contact numbers there....
Cheers,
rwethereyet