Bathroom layout - opinions please

[Dingdongthewitchisbread]

We are about to do up our bathroom and are looking to change the layout as it doesn’t work very well as it is, but I am a bit stuck on the best way to do it. So thought I’d see if anyone has any good suggestions.

I’ve attached a rough floor plan and the issues we currently face are:

Toilet is too close to the wall, can barely move when sat on it.

Can’t have a shower screen as the bath overlaps the window.

Built in cupboard cannot be removed as it houses the boiler. It can be made a lot smaller though!

I’d absolutely love to have a walk in shower as well as a bath but I don’t think it’s possible because of the boiler.

Can the boiler be tucked away in a kitchen unit? Mine was originally located in the kitchen, albeit in an awkward locations, but I had it moved so that it could discretely be tucked away in a tall unit.

Kitchen is currently being fitted so can't really show a better picture. The space below will be used as a cleaning/broom cupboard.

Our boiler is in our kitchen and I want it in the loft. We have the pull down ladder access to the loft and it just has to be boarding around it for servicing. We were advised to get it moved up there to create space but other things have got in the way.