I earn SGD 110,000 &my wife earns SGD 60,000 per annum. How much salary should i get for relocating to London?

We have a 4 years old daughter. We have a decent living in Singapore with own condominium and a car. My company is offering me GBP 45,000 as basic and GBP 15,000 performance bonus to move to London. I am ready to compromise a bit, but not to a great extend. I don't mind living in a decent localilty outskirt of... show more We have a 4 years old daughter. We have a decent living in Singapore with own condominium and a car. My company is offering me GBP 45,000 as basic and GBP 15,000 performance bonus to move to London. I am ready to compromise a bit, but not to a great extend. I don't mind living in a decent localilty outskirt of London. Should I accept?
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