In my experience, Farnborough LARS will sometimes ask in a "can you accept?" type of way if you wouldn't mind a temporary heading/level change, if it will help de-conflict you from their many IFR arrivals and departures (some of whom don't have the best English or understanding of the difference between a RIS and RAS, for example!)
Having also visited them and sat with the controllers on a sunny Saturday afternoon, I can well see the challenge of vectoring jet traffic through very busy class G, lots of it not talking to them, not squawking (or even if they are, not verified etc).
Hope the SSR still doesn't drop out fairly regularly like it kept doing on the day I visited as well (just to make life easier
)