Well for us normal folk, average is about £2800/2900 take-home per month, with more in the summer.
If you're a contract F/O recently hired by GB, you'll take home £3800 a month. Nice!
9 days rostered a month only applies to MAN. At LGW you can expect 90hrs a month. Lates to earlies are becoming more common and causing lots of fatigue.
Some flights in summer aren't crewed yet, and F/O's are being asked to sell their leave back. It'll be a busy summer!