Obp
Todays exchange rate is 6.85. In the last twelve months it has been closer to 7.0 than 6.5 apart from one short blip down to 6.35. Average over the last 12 months? How about 6.85.
Financial institutes predict a gentle slide towards the other side of 7.0 over the next six months.
To say that its possible to get £1000 a month in overtime compares with saying that I might win the lottery tomorrow. But yes it is possible. But I suspect that your hours for June will give you precisely null pounds (and not much time on the golf course either).
EKG has covered the point that I was going to make about the accomodation allowance.
My impression is that you are not stating facts but distorting semi facts to support your version of life at EK. Also known as spin.