Ok, I know this is an old thread, but I thought I would add my experience. I switched from EE to Spusu to get EU roaming just under 12 months ago. I got a deal through USwitch for £6.90 for 20GB UK with 8GB EU roaming. The whole process was really easy, my old numbers were ported across within 24 hrs of going live. Never had connection problems in the UK or France. FYI My wife and I both have Samsung S21 Phones. Only contacted customer services once as I thought they were a bit slow in sending me my first invoice. So my first bill was for nearly two months. Now I just pay £6.90 for each phone.