Yes, there is a competition. It is basically a wargaming show, with copious displays of figure and vehicle modelling, as well as large scale boats, Dinky toys, etc. The bar in the hall is a little basic, but there is a Wetherspoons less than five minutes' walk away. It's Sunday the 24th, at the Victoria Centre, Crewe, which is well signposted from the main road through town.
Ed H