You will take home around £950 per month as a flight attendant. On top of that you get cash allowances at hotel. Bangkok £65 Singapore and Hong Kong depends on trip length but £100-120. You will normally work 4 trips per month.
BUPA health care (Basic plan) and staff travel.
I was earning more at a charter airline but Qantas pay around the same as Virgin Atlantic. Although at Virgin the staff travel package is way, way better than Qantas and you enjoy a wider range of destinations.