O
oldplumber
with your background and experience, get out there, advetise in local mags, not papers, use you friends etc and do some w/e work and go from there. £25 per hr in reasonable rate for what you can do if not more, callout/first hour £50 etc but get a customer base and work it from there. Have fun youll only have to do 14 hour days for the first 20 years!!!!!!!!!!!!!!