Skid, I refer you to my earlier post. For what it's worth, the starting pay fo an FO at VS is around £39k pa. Down-route allowances, as has already been stated, add a further £300 to £500 monthly. Sector pay is worth no more than £100 monthly. There are other payments, such as pay for working on days off (fairly rare), delay pay, and a few other extras.
A new pay structure is under discussion; the company's latest pay offer has been decisively rejected. The likely result of these negotiations will be a reasonably enhanced basic pay, with some element of extra pay per flying hour. Most of the non-subsistence payments will probably disappear. What the net result of this will be in terms of percentage is not yet certain - and any deal may be scuppered, or at least delayed, by the forthcoming war.
B767300ER, as long as you have the right to live and work in UK and obtain a JAA ATPL, you would be welcome at Virgin. There are one or two Yanks here. 987654's experience is right in the ballpark also.
As for security of employment through another war, who knows? The company certainly has contingency plans, but I doubt anyone really knows what the effects of Desert Storm 2 will be to us, or how long they'll last.