It’s billed as the most depressing day of the year: Christmas is but a fading memory, the weather’s grim and nobody’s got any dosh. But, on the upside, Blue Monday, is a brilliant day to bag a top bargain. We’ll be updating this page as more offers come in so check back, but here’s a couple of cracking deals to kick off. South of the river, pizza joint Bunga Bunga in Battersea is serving up pizzas for £1 all evening. That’s right, a quid!