Nice. We did hire a surveyor to give us an idea about the planning / load bearing type stuff so we've a good handle on that side of things. But assuming we get the approval, I could just go at it with a sledgehammer myself?
Yep. If there's no loading issues and you get building control ok. Just go at it. In most cases your builder will get labourers to do that work so unlikely to be very cerebral
Call building control before and agree. Get them to sign off after.
My builder took down a wall with no more than that.