Thanks Ted, I'll do the figures based on 17.32p for now then and see how it stacks up.
Well it looks like it has been confirmed as a 20% drop to 17.32p as expected. Makes installing a 50kWp turbine at a cost of getting on for £300k look a lot less attractive giving he will be borrowing almost all of the capital should he go ahead.
Interestingly the 100-500kW band has gone down just over 22% from 18.53p to 14.43p.
Paul