Thanks for all the replies, I've gone with these for they have four connection points on board and they say latest version 009S (makes a difference?)

https://www.amazon.co.uk/N-ORANIE-Extension-Capacitors-Options-Ethereum-Dedicated-PCIE-Riser-VER009S-6-Pack/dp/B077K28B6Y/ref=sr_1_21?s=computers&ie=UTF8&qid=1514440498&sr=1-21&keywords=PCIe+riser

So, to await delivery of kit and put together and test late January.

Reck