The bar has occupied its current space, known as the 'Horrace Jones Vault', for a few years now but it was originally used as the coal store for the bridge's steam engine rooms, and the coal was loaded into the store directly from the river beneath the bridge where the window now looks out.
When the bridge was converted from steam to electricity in 1976 the vault was converted into the garage for the "bridge master" and subsequently a gift shop, which closed in 2001.
In 2003 the current owners got hold of it and spent three years converting it into the bar which now occupies the space. The name is, apparently, derived from 'moct' the Russian word for bridge. For more information visit the website at http://www.mostcafebar.co.uk/
Click here to see the location on a map.