I have flown through the TIBA airspace recently near BK, and its a bloody disgrace. Especially with respect to IFR aircraft. I don't blame the controllers I blame airservices corperate policy ie Make money by; increase revenue and reduce cost therefore - Staff shortages. Do IFR aircraft get a discount because they are not actually receiving a service even though they are paying for it! Unfortunatly it is not the only part of the industry that is suffering from dollar pinching......