Cheers.
There are several bandage techniques, taping and pre-fabricated knee braces available that might be beneficial for you.
Again, this would require an assessment to see what suits you best.
As far as I know, in the UK you can go to see a Physio directly, you don't need a referral.
Your Orthopod will not assess your knee strength and investigate strategies of movement and function.
All the best,
Fyzzio