There was a NanoKnife trial in London carried by Professor Ecannotbenamedhere, on the NHS, but the results were inconclusive, which is why it is not offered as an NHS procedure. I think he charges around fifteen grand privately, depending on how many electrodes (@ £400 a pop) they need to use.
There is a centre of excellence for the procedure in Offenbach (my nick-name for my German Shepherd) near Frankfurt in Germany, which no doubt you have already Googled. It might be worth obtaining an opinion from them regarding your condition, but I doubt if your European Health Insurance Card will cover the cost.😉😂😂
If you check on the Macmillan Cancer Care website forum, I think there are one or two guys who have had it done on there.
Best of luck.
Cheers, John.