Had quite a positive response from Turner Bikes.
Initially they offered to sell just the bushings at a very competitive price. However prior to order I stripped a few pivots down and the axle (for want of a better word) the aluminium tube on which the bushings run, were worn.
I then went back to them and upped my order. They then suggested a full kit at a good price - which is on route I hope (paid for anyway).
The only slight issue is the design. I look after my bikes and service bike and bits regularly. I greased the bushings frequently taking note not to 'purge' as per Turner's advice. They have lasted about 18 months - this bike wasn't used that much, a hardtail was used in bad conditions.
I have read reports of the bushings lasting for ages, in my case (Peak District riding) they haven't and compared with the Orange 5 I had before the fix is a lot more complex and expensive.
Swings and Roundabouts I suppose.
A great bike all round just slightly disappointed in the maintenance costs.