It might be worth trying Evorel in that case. It is what Dr Newson herself uses so can't be too bad

(Although I think she uses 2-3 of them because they do wrinkle!)
Are you signed up with the Pharmacy2U who deliver your NHS prescriptions via Royal Mail? It's great, no more going to pick stuff up. Just order in the app and it arrives in the post for free. Check it out.
I give them a call each month to see what Estradots they have in stock, before I request my repeat. So far they've always had SOME. Then I tell my GP (this time via the NHS app note box) what Estradots they have in stock, and she prescribes me what I need that month, using that. I wrote her a little explanation about not wanting to switch brands...
It is working so far.
Then I have access to CloudRX private pharmacy via Newson Health, who often can get things in stock which other pharmacies can't. Although even they didn't have Estradot 100s....