Being asked to orbit is pretty common place at Coventry (especially now that the Thomsonfly jets are in and out on more frequent basis) whether in the circuit or on the fringe in the local area. I'm not sure if there are any set rules for which way the orbit should be in the circuit but a rule of thumb based on my experiences so far are; RH circuit LH orbit, LH circuit RH orbit which turns you away from the circuit pattern and allows you the opportunity to see and avoid any conflicting down wind traffic. Bottom line - do as the ATC ask unless you can see a danger that they can't and don't be afraid to communicate if unsure.
Orbits on first solo - Nightmare!