Thanks for all the advice!
He doesn't really like his scooter either
The Strider sessions at the Velodrome
sound perfect. Unfortunately they're only run during the week, and not on the day we have off together, what a shame!
We picked up a Specialized Hotrock 12" starter bike from this forum. It needs a fair bit of work to make it rideable again, but it's a nice bike, and my son already looks a lot keener on it than he did his shiny new red Strider... typical!
If we're off on a Tuesday or Wednesday at some point, I'll be sure to take him to the HH Velodrome.
Thanks again, Tara.