However mention in good time that you have/had a hydraulic issue but require no special handling then expect a normal approach but with a suitable gap behind you to allow the runway to be inspected after you land and no chaos.
Already partly covered by Gonzo, but you will also have a Full Emergency in place. Same at LGW. Any notification of hydraulic problems, however minor to the crew, require a mandatory Full Emergency by ATC. We have no discretion on this one. I believe that part of the reasoning is that if a hydraulic system has failed then there's at least a chance that hydraulic fluid may have found its way to places it could do more serious damage (but I'm ready to be corrected!)
