I need to clarify whether we will be on just 19K without living expenses after graduating the college (in swanwick). This can't be right, that's less than we get going through CATC.
Without living expenses, basic salary going through the College is approx 14.5/15k. As fly bhoy says, 19k includes accomodation allowance. Your basic will be slightly higher than that total when you get posted to a unit plus there's UHP to come too.