I think you will find that certain operators will not accept any less than a RAS outside CAS. I certainly wouldn't. I think that you will also find that certain smaller operators such as Eastern Airways cannot accept anything less than a RAS outside CAS, so I'm certain that any jet a/c operator will only accept a minimum of a RAS outside CAS. Therefore if there is nobody providing a RAS then inbounds will be affected. possibly Waddington could provide a RAS, but sounds a bit too much if an a/c is carrying out a procedural approach and then given avoiding action to break off and then re position.