It has been covered before, but starting basic salary is about £43k. There is a further £7.5k (currently) in hourly pay and profit-related pay. On top of that are the subsistence allowances which total around £5k - but are spent down route, of course!
Take-home pay will depend primarily on two things - which country you live in (many Virgin pilots live overseas) and what pension contribution you elect to make. Assuming you are under 51, you may contribute up to 15% of your pensionable income (which includes the hourly and profit-related pay). As long as you contribute at least 6%, the company will contribute a further 15%. Other benefits include private health insurance for you and your family, death-in-service benefit, loss-of-licence insurance and PHI (critical illness cover). There are plenty of other things, but that'll do for now!
Oh yes, for a UK taxpayer, before pension contributions, your take-home should be around £2800 a month.