An elaboration and a question before I go swimming in France:
Back in the 50s Raleigh bought steel rolls and tubes and built bicycles in their Nottingham factories. They bought tyres from the nearby Dunlop factory and few few bits from other sub-contractors but the vast majority of the manufacturing was done in-house.
I bought from Dawes in Tyseley in the nineties and watched as guys turned Renoylds tubes made just down the road into frames which were then painted and built up. The vast majoity of the parts were by then imported; Shimano groups, Mavic rims, DT spokes, Nokian tyres. When they moved to Redditch the bikes became yet another made in Taiwan, assembled and sold as a UK brand.
So how many of the parts that make up an On-One are manufactured in the UK, Brant/PlanetX?