Sorted. Plumbed for the Kuwahara Novas. They ticked all the boxes. Size, spec and cost. They arrived yesterday and put them together this morning. One junior and one expert. The kids love them and watching them ride em just up the road and back you can tell what a difference getting the right sized bike makes.
So off to Clydebank tomorrow for the next meet. Let's see if they go any faster....
Thanks for those who got in contact and provided advice. It was spot on
A word of warning though. I eventually got the bikes from Chain Reaction Cycles (48 hr free delivery and the best price) but it was the 4th place I had tried. All the previous suppliers suggested the bikes were in stock but the weren't. Even one on ebay. I learned pretty quick to ask before placing the order. Kuwahara currently has 6 week delivery time. So big up Chain Reaction
but be careful. Don't assume bikes and parts are in stock and always ask before placing an order.