Cambo,glad to have been of use.
The average yearly flying does vary around the bases because the large bases (Man,Lgw and Bhx) tend to be 'overmanned' therefore average hours are lower than at say Ncl or Gla.My average(and it is just that,an average) is about 550 flying hours a year but a mate in NCL does more like 700 a year and frequently approaches the 28 day limit during the summer!
As I said before,it is a good company to work for and as ever, The Grass MAY APPEAR greener elsewhere but at the end of the day, work where you will be happy
Good luck again and see you in about 22 months!!!