Standby's at LHR
Is standby for LHR not dual base. You cannot get called to operate a LGW flight - we only need 3 crew to man a flight at Gatwick anyway so I'm sure they'd just pay us an allowance and send us off with 2 if they had to lol.
I know there was a time when LGW WW could be called to report at LGW then go up to do a LHR flight but with such different contracts and working arrangements in place I think those days are well gone.