LnP

It doesn't and MCS didn't say that. They highlight the problem with Building Regs compliance. I agree. I don't read it as buck passing. Looks to me like MCS are trying to sort the problem. Still trying to figure out what this means for a new installation.

Indeed, but GSE say that is a list of panels they have tested and received positive, indicative test reports from the Warrington Fire certified laboratory. They go on to say that while solar modules can still be tested, the challenge lies in obtaining classification under BS EN 13501-5 BROOF (T4). So I'm confused. Will BC sign off roof integrated roof PV panels without the classification?

It seems to go farther than that: "where solar products form a roof covering (i.e. roof-integrated) a fire classification is required so that compliance with Building Regulations can be demonstrated (specifically Regulation B4: External fire spread). Any new products brought to market are currently unable to obtain a fire classification and therefore cannot be integrated into roofs in compliance with the Building Regulations. This also prevents them gaining MCS certification." So Building Control will in future not be signing off roof integrated PV panels until fire certification is sorted out. Seems unbelievable? @SteamyTea the 4 on which list. I missed that.

Link here to MCS Update. And I got an email from GSE. Not sure if this will work but it says it can be viewed in a browser, here. Any thoughts on what this means?

If you're concerned about the planet and you think your gas utility are going to put hydrogen in your gas pipes, you should definitely install a heat pump. Let's hope someone can explain the second law of thermodynamics to our politicians so that this never happens. Burning green hydrogen for home heating would be madness. It will be expensive and bad for the planet. Getting a kWh of heat into your house by burning hydrogen will require six times more renewable energy generation than doing it with a heat pump. That's six times as many wind turbines and PV panels. The priority for green hydrogen should be to use it in applications where there is no alternative, e.g. fertiliser (ammonia, urea), chemicals manufacture (methanol) and oil refining which currently get their hydrogen from natural gas. If all of the existing renewable electricity in the world were used for those industrial uses, it would not be sufficient for the current industrial demand. Before we even think about burning hydrogen, we should use it first for those applications. If you're interested in reading more, check out Michael Liebreich's Hydrogen Ladder.

I was with Eon when I wanted my 3P meter installed and they were hopeless. I switched to Octopus and they got it sorted.

You could try playing around with this demand calculator. I don't have an EV, but assume that if I did, I'd want something faster than a 7 kW charger. I'm guessing I'd want a 22 kW charger?

What are the pros and cons of natural slate vs artificial?

A good article. Carbon Brief have good people writing for them. Interesting though, in the context of myths, The Daily Telegraph gets 13 mentions, the Daily Express 5 and the Daily Mail 8. Funny that, eh?

I've got a 3 ph supply and my electrician recommended this kiosk from Meter Boxes UK. W800 x H1064 x D320 mm current price £684 incl VAT and delivery. It seems robust enough and will be big enough for all the 3 ph stuff - don't have everything in there yet.

Since you will be self managing, you will be the Principal Contractor. There’s a nice summary what that means in the examples section towards the bottom of this guidance from the Self Build Portal. You’re responsible for the matters in Part 4 of CDM, which shouldn’t be difficult for you as you’ve managed building sites before. Regarding the Principal Designer role, it’s nice that your architect agrees that they have been responsible for that. Once the construction phase starts, the PD’s work is mostly done. The PD now just has to hand over the H&S file to the PC. Ask them for it.

@nod Please share it in the forum rather than DM. I imagine there's nothing confidential about the size of your plant room!

I wish I (or my plumber!) had known about manifolds on DHW systems. I've got a boiler which is a long way from the kitchen and it takes ages for the hot water to come through.

That's a pity. Are they 2G or 3G?

Update - I had paid PWC with a credit card, so I made a Section 75 claim against the credit card company .... and they have refunded my money, all £905!! Very happy😁.