Evening,
RE the salary offered, it's more than what the ATC's earn here, depending on the year's experience. One of the allowances, station allowance, is station specific and is calculated on the amount of movements and complexity of airspace. The USC allowance is approx. 2600 Pounds.
If you were starting out with zero year's experience, your basic salary, including pesion contribution from the company would be in the region of 19600 Pounds (if R11-50 buys 1 Pound).
Cheers!!!!