Those look identical to the Leupolds I have. Now I know where to recommend purchasing them in UK

I think they're a bit wide at the bottom but otherwise excellent for the purpose. I'm used to seeing them on my Challenger now. Perfect height for me. PLEASE let me know how they work for you.
I'm putting 3 Stutzens up for sale in US. 2 RB2 in 177 and a tap loader in .22. Still have another tap loader. Have to reduce the herd, I horded too many.