Hiya UFGBOY,
Well, I work for British Airways CitiExpress as a No. 2 Cabin Crew Member (which, obviously, you would have to join as as well, because you are not able to bring whatever seniority you have with you).
Your basic annual salary would be £10,110. On top of this you would earn £1.90 per hour flight duty pay for duties worked.
So, basically, in an average month your take home pay would be in the region of about £1,100 - £1,200.
Hope I've helped a bit, and good luck if you decide to go for it!