I haven't checked recently what's available, but you should easily find Sustanon250, Primobolan Depot, Anapolon, Clomid (Klomifen), Arimidex, Clen, Propecia, Syringes,etc. Some of the pharmacies are specialized bringing in some imported AAS like Testoviron and some other stuff, you just have to ask.
Try to find big pharmacies (Eczane) among thousands of them, there are pharmacies in every corner

They may not have everything in stock or in sufficient quantities, so just tell them what you need and they will get them for you in 3-4 days most.
As for the laws, there are no limits or Rx asked, but I wouldn't recommend you to buy a suitcase full of AAS. They don't usually search your bags when you leave the country, but they will x-ray them and insane amounts of medicines may put you in trouble for smuggling. Any reasonable amount for personal use should not be a problem. Bringing back them to UK is something that you will have to deal with....
Have a good shopping
