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SJS cycles carbon road fork is 2,5mm less/380mm .... but with iso mounts :
https://www.sjscycles.co.uk/forks/evolution-a647-carbon-road-disc-forks-700c-1-18-inch-ahead-for-32-mm-tyres/
140mm is possible with front iso with a tektro lyra adapter but looks a bit weird
enigma had a carbon fork that was 376mm but i cannot find it on their website. Maybe ask them:
It could be the version for sale here->http://www.fatbirds.co.uk/1767599/products/enigma-c-six-carbon-disc-fork---350mm-steerer.aspx
The Condor ones had the lowest a-c distance I could find, so will go with those, plus they're good value. Will ask the question, though 160mm isn't a deal breaker.