I played with Bright and Loop when we got out smart meter installed earlier this year. Saw those same reviews claiming Loop was a scam as it asked for credit card details, but it’s pretty clear to me that it is necessary to verify my address, as otherwise anyone could snoop on your energy usage!
Hadn’t come across Hugo though, and it looks much more polished than the other two. Just signed up, and decided to try the “Sign up using your IHD” option. It worked well, didn’t need to enter credit card details, just had to enter/scan the number/barcode from the bottom of my IHD and enter the date I moved in.
Ha! For yesterday Hugo=£1.51; Loop=£1.58;IHD=£1.57. Bright has deregistered me, so starting again with that one. With the exception of Hugo who helpfully point out where the VAT is shown not sure about the others. We only have electrickery. No gas.
That’s the trouble with being retired too much time on my hands!