Looking at the second photo I'd say those are "Wedge Wellies", which was an idea that featured in the Dragons Den TV business show, intended to combine the practicallity of a welly with the style of a wedge heel shoe, planned to market to the music festival crowd.

Unfortunately I don't think it took off as while you can find lots of references to them on-line, all the former stockists appear to be out of stock, suggesting they are no longer being made. We actually have a pink pair in our collection, which we picked up in a second hand shop in Great Insmouth for not a lot several years ago, though I can't remember off-hand if they've appeared in any of our released scenes yet.

Great boots for messy play though - just what every WAM girl needs, boots that keep her stylish even as she can feel the custard and soup trickling down inside her trousers and collecting around her feet.

Thanks for the insight Dungeon Master,,that's really helpful