I personally use Therapie Clinics in London for anti wrinkle injections (best value I could find from a doctor led clinic for botox), and know people who have had good experience with them for laser hair removal. They are also reasonably good value for Sculptra (though I have found better value in London per treatment, as they charge per vial).
Overall, I'd highly recommend them, and you also get £50 credit added to your account after your first treatment with them over £225 if you join via a referral first.
This is my link if anyone wants to use it
https://therapieclinic.com/uk/join?code=2vC3liXq
You can also use code: 2vC3liXq in the app