The current weather conditions have led to a significant rise in smog levels around London. Parts of east London have been recorded at 'very high'.
Take a look at the figures in full from Defra here.
More top news
London mayor Sadiq Khan and Prime Minister David Cameron both gave speeches in Roehampton at the arrival of Britain Stronger In Europe bus.
Millwall fans who forced Barnsley supporters to flee as they tried to break into the opposing team's end at Wembley could face life bans.
Some sunny spells are likely later in the west following a dull start.