As you say that is variable, but with the hourly rate as the pilots have found out it is much less variable than legacy crew rates.
Very true. The whole point of the NF exercise is to
maximise the hours each individual works. Refer to the maximum legal duty and flying hours, multiply the appropriate one by the appropriate rate and you won't be far wrong.
For info, LHR shorthaul pilots fly 750-800 hours per year.
Duty time runs pretty high as well. Longhaul pilots fly 850+ hours.
Your best source of information regarding comparative hours are likely to be current LGW crew. Jetsetlady, where are you.....?