Yes, you read that title right: there is an outright world speed record held by a mallard, and one that’s unlikely to ever be beaten. Now that’s not quite what LEGO train master Joe Bloomfield has built here – but it’s very close. This is an A4 Pacific class steam engine, built by the London and North Eastern Railway in the 1930s (and now Joe in the 2020s). It’s a fine model, albeit not one for the purists! The vast majority is of course made from our favourite plastic bricks, but a handful of third-party elements add some crucial details. So too do the custom decals, which identify this engine as 60009 Union of South Africa. Coming back to that speed record, the A4s were – and are – the fastest steam locomotives ever built. And the holder of that 126mph record? Not Union of South Africa, but its class-mate, 4468 Mallard!