They're the same, and they're different.
Main thing that you notice first off is brewhouse efficiency and hop utilisation.
And it's a lot harder to chuck down the drain when it goes wrong.
Should be ok with that CU.
In your control panel I would put an incoming fuse, or MCB and then fuse each individual circuit inside. There's a lot of current if something goes wrong.
Do you know what type of consumer unit you have at the moment? 17th Edition, split RCD maybe? If you have RCD protection in the consumer unit and a spare way then it should be easy otherwise as it's a new circuit then the electrician will have to install an RCD.
I assume you'd want an IEC30609...
I'd drop my keks on their front doorstep and give them a taste of their own medicine.
I may, or may not, have done that once outside the front door of Admiral Taverns' head office.
It's Brewer's Clarex you're looking for. It's essentially an auxillary fining with the side effect of breaking down gluten. Never seen it for sale in the UK.
They didn't, and won't change the mains voltage or transformers. All they did was declare the nominal voltage as 230 and widened the tolerances stuff has to work at ( -6%, +10% iirc) so it would work in any EU country.
Your mains will never be spot on 240 anyway. Depends on length from...
I suspect if you connect them in parallel, you'd need to reduce the wort flow to cool it more as there's less time in contact with the cold water.
I have 6 x 1m lengths in series and I can cool 50l from boiling to 20°C in about 15-20 minutes.
EDIT: There was a reason I used 3/8" pipe instead...