Passengers using the Elizabeth line service at Heathrow faced significant disruption on Wednesday morning (February 7).br br At 8.30am Transport for London (TfL) reported severe delays between Hayes & Harlington and Heathrow Terminals due to an earlier track fault in the airport area. br br Sadiq Khan is urging Londoners concerned about their health to get checked up as he praised King Charles for "bravely" revealing his cancer diagnosis.