The average is 4 to 5 trips per month. You get a minimum of 10 days off at base per month.
Trips are mostly 3 or 4 days duration including days of departure and arrival, i.e. leave LHR evening day one, arrive Baku early day two, leave Baku early day three arriving LHR around midday.
Some 4 and 5 day trips invlove a night shuttle flight. You also get at least 2 days off after every 4 and 5 day trip.
Standby duties are rostered in blocks of 3 to 6 days.