Its a good move to make as he will make the same salary (if skilled) as a UK local.
The GBP pound is up again against the dollar there is a lot of work so it's a viable move for most, as long as you don't mind cold weather, grey skies and a gathering feeling of unrest and uncertainty at the root of society
The only part I am not sure of is why Pakistan > Dubai > UK?? whats the advantage.