Fertility Clinics for Low AMH in London?

Hello, I have been TTC for 3 years with a low AMH level at 1.14pmol/L (now probably lower). I am turning 40 this year. We have no other issues apart my age and low amh. In November, we started fertility treatments - one unsuccessful IVF cycle , then four unsuccessful IUIs. I feel that the current clinic does not really put a strategy tailored to my case. I am considering switching to one which would be more specialised in low amh levels and which would come up with a protocol / strategy maybe tailored to my case? Any similar experiences? Any recommendations on protocols or clinics? Thank you