Hi Berna, no flights directly from the U.K. at the moment. Some people are travelling to Turkey, via another country, some via Germany for instance. You need a negative pcr test for Germany and also to be able to enter Turkey, though would need to check current regulations as can change quite quickly. Might be possible via other countries also.
But all arrivals into Turkey have to go into isolation/quarantine at a place designated by the Turkish authorities, no way out of that as it stands at the moment. Varying reports of the standards of these, but seem to be using student accommodation in places, not hotels. Facilities are basic but adequate it seems. Food is provided, but also food can be ordered in from outside, at your own expense of course.
Reports of a cabinet meeting tomorrow so maybe some further news about the restrictions after that, though report says it is to discuss opening up restaurants and cafes.