Ops & crew controllers make varying amounts of money depending on the type of operator they work for. Salaries range from poor to excellent!
In my experience crew controllers/ops officers don't do too well where ops controllers tend to make respectable money for the most part.
Expect anywhere from £14000 for junior roles up to almost £30000 for an ops controller's position with a top drawer carrier, though the average is more likely to be £24-26000.
Scheduled and established charter carriers will tend to pay better where as short term wet leasing companies and the smaller cargo operators will not...