Ed now you have confused me. Just elucidate @Bezzin that he seems no dino and any longish frame should fit, even a Cannondale. If he wanted a Genesis he is not only stupid but did not do his homework as Mosquito have one of the more experienced bike fittings in London.
Yeah, tricky to draw the number from scratch, however any bicycle shop that have a bikefit account can input those number and find the correct size, or an experience person with tape measure can do it on the spot.
Ed now you have confused me. Just elucidate @Bezzin that he seems no dino and any longish frame should fit, even a Cannondale. If he wanted a Genesis he is not only stupid but did not do his homework as Mosquito have one of the more experienced bike fittings in London.