These are really different ride on toys, and I don't know how I haven't seen these before! The Casdon Henry and Hetty Little Driver Ride On Toys are for sale in a few retailers, but Amazon have them at a cheaper price than anyone else, at just £20 each with free delivery.
These are two-in-one toys that can be used as a walker by younger children, then as a ride-on when they get a little older. As a "foot to floor" ride on it is suitable from 12 months, and the steering wheel (shaped like the Henry vacuum handle) can be locked to make it sturdy when it's used as a walker. When you flip up the seat there's a big storage space for little ones to hide all their treasures and toys.
The reviews are really great, with many commenting on how sturdy it is. I like the fact that you can actually steer this one, as lots of the cheaper ride ons don't actually steer at all, and the wheel is just there for decoration. There's no sounds or lights on this ride-on, but the cute smiling face of Henry and Hetty make up for that, as does the fact that your child can ride about on a happy hoover.