Thanks for the responses, I think the Kaffenback is what I am looking for.
Thanks again for the help - now to find a reasonably lightweight and cheap disc wheelset!
Funnily enough weighed my "best" full carbon, full 105 bike with Fulcrum 5s and somehow it weighed 9.1KG - and that was adorned with lights and a Garmin only haha!
More weight than some entry level bikes with a decent spec - not sure how I have managed that!! Unless bike reviews aren't quite as accurate and honest as they portray....