It depends on what would have been a fair bonus. It was discretionary on completion of contract???
I am also aware that other managers who were there longer than I was, received bonuses before being let go in the same way I was.
A months pay would have only been a bonus of approx 8%.
Given that I know I had holidays I had not taken, it was resonable to assume (without seeing a payslip) that I had received a bonus of approx 5%.
Many thanks. I believe I satisfy all the conditions you have listed. One final thing, how would be best to reply to the letters from Centrica, sighting 'estoppel' as grounds to avoid repayment?