PSA: Boots online doctor do prescriptions for anti-aging now!
I was looking for azelaic acid online and discovered you can get a prescription online and they also do Differin (which I use already for antiaging) for £28. They have trifarotene also. I got my prescription approved within 2 hours and they deliver, so much cheaper than going to a derm!
Edit: they send the actual medication, not just a script