I have a One K Defender which fits me better than anything else. I need a helmet with a British kitemark and am considering the Gatehouse Conquest. It is eerily similar to the One K and even though the One K is made in Korea and the Gatehouse says it’s made in the UK- it does look pretty darn close. I wonder if they fit in a similar way.
Charles Owen’s don’t fit me at all- the JR8 comes close but it’s still not all that comfortable. I need a very oval helmet and I love my One K.