Lesley M, I'm sorry to hear about your problems with Utrogestan but it's very common (the most debated subject on here) and a lot of women don't get on well with it. You certainly don't have to be progesterone intolerant to have problems with Utrogestan but fortunately, it's nothing like compounded progesterone, Cyclogest or progesterone gel in my experience.
I'm afraid my Darstin progesterone gel is not available in the UK and Cyclogest also seems to be difficult to get hold of but I don't know why because it's not expensive - it's under €20 per box of 600mg pessaries in Spain. When you consider the pessaries are cut into 50mg doses, it makes them quite economical. It's years since I had a UK prescription so I'm a bit hazy on that but is it £10ish per item?
I find I have excellent womb lining protection with the gel but I added in a 50mg vaginal Cyclogest dose a couple of times a week just for good measure but since my scan, I haven't bothered to do it very often because I don't really need it. I found I could tolerate 50mg Cyclogest well and without any side effects which is encouraging but overall, I prefer Darstin and it's more user friendly.
I buy Cyclogest, Darstin and Oestraclin (the Spanish equivalent of Oestrogel) at the pharmacy without a prescription but some pharmacies can be a bit sniffy about selling it without a prescription although it's not a controlled medication like antibiotics. On the rare occasions I have used a prescription here for non HRT medication, they always hand the prescription back to me anyway so I can reuse it.
One further thought... bespoke progesterone from the compounding pharmacies in the UK are excellent with zero side effects and again, I always had good womb lining clearance/womb lining protection with these products despite all the dire warnings. That said, it's expensive which is a major drawback for many people.
So there are quite a few options available.