IanR

You only get the 7 year warranty with an approved install via an Approved Installer. Nibe are not catering for the DIY market Nibe has a modbus module that you can add-on. My Loxone communicates with SMO40 controlled via it.

Nibe are excellent, but expensive and they control their installers very well. I have an F2040 and it's never missed a beat in 9 years.

Yep, that's how mine worked. Plus recovery of 20%VAT on any materials you purchase directly, that aren't part of a supply and fit engagement.

Directly on to the Insulated Raft. At the time it was £75/m^2. If you follow the link to my post that -rick- posted, it's got the full info in there.

I can recommend the poured resin option. I also considered all the alternative options. Mines a two colour resin, in the style of a polished concrete finish and most people that visit ask if it is a polished concrete, even though it wasn't the intention to be an exact copy. Lot's of colour options and the different lacquer coats allow for matt, sheen or gloss finishes. I've been pleasantly surprised at how durable it is. It still cleans up (mostly) like new after 9 years and ours has a hard life. They can be re-top coated as well should it ever start to show the wear and tear or you want a different colour/finish.

Here's a reference for what I did on my cow-shed conversion. I built the studwork frame, foamed the steels and cut away any excess with a hand saw, then clad the studwork. If you clad first and try to fill the void with foam it will burst the cladding.

It's a job for a ride-on brush-cutter, a walk behind rotovator is unlikely to handle it and leave you a lot more work to do to get just grass growing.

Not sure how far this chap would travel, but he was very reasonable for me. John Dobson, Essex Mammal Surveys. (He does bats too) https://www.linkedin.com/in/john-dobson-1a7b315a/?originalSubdomain=uk Alternately, look for other surveys submitted for applications on your LPA portal and go with someone not to grand, that tends not to find anything that requires further investigation.

When you say "clumpy", is that foliage that's sprouting in clumps, of is the ground now uneven due to moles and ants etc. A brush-cutter will sort the foliage and after several cuts get the grass growing more evenly. If the ground is uneven, you will still need to clear/mulch as much foliage as possible, but the then either turnover the ground with a large rotovator or bring in new screened topsoil.

Definitely photos needed. If it's "just" brambles, clumps and saplings up to 1" diameter, get started by hiring yourself a ride-on brush-cutter for a weekend. Something like https://hertstools.co.uk/product/as-915-sherpa-2wd-ride-on-mower-hire/ If it's thick bramble and sloping ground then get an AWD version. ...and wear protective clothing if there are brambles and black-thorn etc. Oh, and wait for the area to dry out a little. These brush-cutters are really capable, I was shocked at how they went through saplings and brambles. If you are not in a rush I'd cut it 4 times over the next year to keep knocking back the saplings, and then start digging out the roots of things that won't give up and spraying any re-occurring weeds. How about the boundaries, is there over-grown hedging? Nope, it wouldn't cut through the foliage, and won't leave it suitable for re-seeding.

Dr. Rod Williams (Williams Energy Design): https://mango-projects.co.uk/2020/05/28/who-are-mango-projects-ltd/ https://passivhaus.uk/directory/williams-energy-design/ Rod helped me out on mine and was very good.

Not me either. I did look at it, but went with poured resin directly on the power-floated RC slab.

Yes, that is an ancillary use. You can't add a kitchen and bathroom to make it habitable, independent from the main dwelling.

Yep, should be. You'd be wise to collect evidence of it being your principle residence, ie. registered for Bank, NHS, Council Tax, Utilities at the appropriate address, at the correct times.

Married couples "only" get Private Residence Relief on CGT, on one property (unless you are Angela Rayner). So, depends what you plan to do with the second new-build in your wife's name. If you can apply PRR to the property in your name, any profit you make should be tax free, until Labour change the rules.