Which specific model is that (Halfords sizing is in inches/by wheelsize)? There is a clear sizing guide provided
So that's the 48cm then. At the end of the day size wise it's your only option on this bike as the 43 is obviously too small.
Welcome to the Wiggins club.Just took the plunge and bough a 19" Rouen for my daughter based on the info from all here. She is just 150cm (on a good day). With the saddle at the lowest point she can tocuh the ground and ride the bike safely. My son is ~146cm and cant touch the ground! Really impressed with the bike so far, have come from an Ilsa Luath 24" - prefer the Wiggins. Never been a Halfords fan but now have 2 great bikes form there (other is a kids Voodo Nzumbi). Hope that helps some others.