"You're **** shitting me?"
Well skip was £200 (used that for other stuff too though) and beam was £120 on top. Plasterboard was probably £100 I did that myself and plastering was probably £150 for the bit where wall was removed.
I removed electrics and plumbing that were in the way.
Calcs were £300 IIRC and regs application was £200 I think
EDIT: builder says it was a 5 day job for 2 people but as i prepped it all beforehand and laboured for him it only cost me 3 days for one person.