Hoping someone has done this and can advise what is needed - no plumbing in the way so I am hoping it would be a matter of knock out old wall, beam and door frame in and bit of plastering to make good? It's a late Edwardian house so brick. In SE of UK (not London) and just wondered if anyone has had this done and how much it was or any advice? Much as I would love to sledgehammer it myself I don't know if that would be wise! 