Thanks. Useful.The internal walls on the ground floor are likely to be block and potentially load bearing, I’d probably even put money on the ex garage/dining room wall being block.
I don’t think you’ll be able to get rid of the down stairs toilet and continue it to meet building regs either. Fairly sure it’s a requirement for disability access. Do you just mean to get rid of the shower while keeping the toilet and making the room a bit smaller?
Your front door would also go directly into the kitchen? That might be a bit odd. You’ll also need to think about services like gas, water and drainage and getting that to the new kitchen location. Where is the boiler?
Wouldn’t the lounge also be a bit small?
Personally, I’d look at something else that better meets your needs rather than spending loads knocking about this property.
I've convinced myself that leaving the current layout makes the most sense but removing at least part of the dining room wall/old garage would be ideal to open things up. What makes you think it's load bearing given there is no wall above it? It isn't pictured but there is a third floor set of bedrooms and it is the same layout as the second (i.e. joists either span 4.3m or 4.1m).
On the toilet, yes I'd keep the toilet just remove the shower. But that'd of course only make sense if removing the dining room/old garage wall was feasible.
I don't mind it not being gone in totality if that changed things i.e. a beam across.
A property that meets my needs in this place, in this market, would be +100k minimum.