ES News email The latest headlines in your inbox twice a day Monday - Friday plus breaking news updates Enter your email address Continue Please enter an email address Email address is invalid Fill out this field Email address is invalid You already have an account. Please log in Register with your social account or click here to log in I would like to receive lunchtime headlines Monday - Friday plus breaking news alerts, by email Update newsletter preferences

Several London Tube lines were hit by severe delays or part-suspended leaving frustrated commuters battling through packed stations on the hottest day of the year.

The Jubilee line experienced severe delays due to a power failure at Westminster while the District and Hammersmith and City lines have been struck down by emergency engineering works at Whitechapel.

The Metropolitan line was part-suspended between Ruislip and Uxbridge due to a faulty train.

The London Overground was also part-suspended between Sydenham and Crystal Palace due to emergency engineering works.

The Circle and District lines have also been hit by minor delays.

Pictures posted on social media showed commuters queueing to get onto cramped platforms at Green Park station.

Huge queues also formed at Bond Street and Canary Wharf as office workers battled to get home on the hottest day of the year.

One person wrote on Twitter: "Hmm, severe delays on my tube routes home. This is not encouraging. May have to resort to the Overground, as there's no way in hell I'm taking the Central."

Another person said: "Massive delays people have to wait 30 and 45 mins to get in one of your “oven” trains and tube temperature above 30 degrees. If this is not a third world service then what is it?"The Met Office today recorded top temperatures of 35C at Heathrow Airport.

TfL said on their website that some tickets are being accepted on London buses.

Yesterday Central line bosses revealed Central line trains will not be full air-conditioned until 2030 sparking fury among passengers.

Chris Taggart, Head of Line Operations for the Central line, said: "We completely understand that travelling can be uncomfortable during periods of hot weather and are investing millions of pounds to make the Tube cooler for customers. There are already air conditioned trains on 40 per cent of the Tube network and we are determined to do all we can to help make journeys more comfortable on other lines while investing in solutions for the longer term.

"We have installed a chiller unit at St. Paul’s to try to keep temperatures down at the station, and have refurbished a number of fans across the Central line. We have fitted Central line trains with reflective film on the windows, which helps to reduce temperatures on the above ground sections of the line, and white film on the roof to help reflect the heat. During this extreme and prolonged period of hot weather, we advise customers to ensure they have water with them when they travel in order to stay hydrated, offer a seat to those who may need it, and, if they feel ill, to contact a member of staff at the next station.”

The Evening Standard has contacted TfL for further comment.