You got 1.5mm of clearance each side, might work, if you're in London, can lend you a 42mm tyres to check out the clearance.
Ah, thanks, but I'm not. Going to hold it up to my mrs' front wheel and see what it looks like. She has 40c I think, might even be able to ride it a little if the gears decide to play.
@Polygon started
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You got 1.5mm of clearance each side, might work, if you're in London, can lend you a 42mm tyres to check out the clearance.