All paypoint 1 capt scales start around £70k basic. Pp24 longhaul capt is £141k basic.
Most people will make £12k per year on top of basic, plus any overtime you may wish to work.
By the time you reach pp19-20, you need to think seriously about leaving the country!
Copilots scales are 75% of associated P1 salaries.
Unlike some other companies, a copilot moves across to his-her equivalent P1 pp. Eg a pp9 P2 transfers immediately to the pp9 P1 rate.
There are a few (mostly trainers) earning in excess of £200k.
HTH
Edited to add: Thinking about it, that may be before the most recent 4 ish% payrise. Not sure...