There are literally Zero brokers regulated in UK with FSA that will onboard non UK customers on their UK license and same goes for AISEC. Brokers have a lot of compliances and regulations prohibits brokers from major countries to onboard clients on their offshore license.
So if you’re from UK, tickmill, fxview etc will not onboard you on any other license except UK because they are mandated by the regulators to do and and are also held responsible for any wrongdoing.
But for brokers to onboard non UK client under UK license they will have to extend the same protection and conditions that they are offering in the UK. It’s an added cost and hassle and they will not do it. There are literally Zero brokers that I have come across in last 15 years that will go that extra mile.
Also, if you’re from turkey, you can enjoy 100X or even 500X leverage. Why do you want to go to UK license and restrict yourself to 30X leverage.
The best strategy is to diversify and open accounts with multiple brokers with smaller account size, till you start feeling comfortable with any given broker.
Here is a list of many good offshore brokers that you can consider