Plumbings no problem, I can do that myself

This was a very rough ball park figure, upwards of £800

depending on exact amount of materials used and exact design (amount of work) of yokes and fork brace! so not far off with your guesses.
Maybe its true what they say about yorkshire folk (I do like value for money)

or maybe I'm still living in the late 80's (happy day's

) but this shocked me somewhat. What I found with a lot of firms was their bread and butter was production runs and small batches so they either refused to do one offs or the money they would make in the time it would take to do one offs made the prices stupid.
Anyway I may have found a small firm willing to do some of what I need

and the bit that made the smile bigger £25 an hour

(far more realistic) they aren't on the doorstep but we can't always have our cake. Just need to pop and see them now.