Andy Burnham was today considering imposing a ban on disposable barbecues amid the risk of further wildfires as Britain braces for one of its hottest days on record.The Prime Minister will chair an emergency Cobra committee this afternoon as the sixth heatwave of the year builds with 33C forecast today and up to 38C tomorrow.Mr Burnham will meet with ministers, officials and agencies and revealed on a trip to Stevenage this morning that single-use grills could be banned to help prevent fires. It comes eight days after the Government said it was not planning to introduce such a ban. Rail operators have warned against non-essential travel with several having already cancelled services as passengers were told to brace for major disruption.East Midlands Railway and Chiltern Railways both told customers to 'only travel if essential' tomorrow; while reduced services were confirmed by c2c, CrossCountry, Great Western Railway, Northern, Transport for Wales and West Midlands Railway.The Met Office has issued a rare 15-hour amber 'extreme heat' warning for southern and central England from 9am tomorrow – only its second such alert in four years.The whole of England has also been put under an amber heat health alert by the UK Health Security Agency (UKHSA) until Friday night, which warns of a 'rise in deaths'.A 38C high tomorrow would make it Britain's joint fifth hottest day on record - tying with that same temperature in Norfolk on June 26, which is the current 2026 high.It comes as a firefighter union chief warned Britain faces a 'national emergency' amid ongoing wildfires, with the country on course for its hottest summer on record.Some 45million people across England are now in drought-stricken areas, and 27million customers are under hosepipe bans as rivers and reservoirs run low.Parts of southern England including Hampshire and West Sussex have now gone 60 days without rainfall, and there are no downpours in the immediate forecast. Stoke Park in Bristol is pictured today after being left with parched grass by the dry weather People walk across the parched grass at Primrose Hill in north London this morning People collect bottled water at a distribution centre in Loughton, Essex, today after burst water mains left more than 10,000 homes and businesses with no water or low water pressure Firefighters try to deal with a big blaze in Eton near Windsor in Berkshire this morning Allotments in Basingstoke, Hampshire, today as parts of the UK are set to bake in 38C heat Parliament Square in London today during the drought which has hit 71 per cent of England Crosland Heath Golf Club in Huddersfield has dry grass on the fairway and a lush putting green Cows feed in a parched field near the village of East Meon in Hampshire this morning