The parents and their child then crawled forward underneath the train until they emerged in front of the driver and were helped to safety.All four members of the family were taken to hospital but a spokesman for the London Ambulance Service said none was seriously injured.Nigel Holness, Director of Network Operations said: “We are relieved that the family who were involved in the incident at Baker Street last night were able to escape unharmed and we offer them our best wishes.“Having reviewed footage from our platform cameras and spoken to those involved we understand this incident was an accident but it does underline the need for all customers to remain behind the yellow line when waiting for trains or walking along the platform..”According to TfL CCTV footage, which the company is not releasing to the media, the mother fell at 10.12pm. The Jubilee line resumed operation at 10.55pm.Their survival was made possible by the drainage pit – sometimes called an anti-suicide pit – which runs along the length of the track on that platform.The floor of the pit is around one metre below the rail, providing enough room for a fully grown man or woman to lie down under a passing train. The family fell under the tracks of platform 7 at Baker Street, carrying the southbound Jubilee lineCredit:Dan Kitwood/Getty Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. A family of three miraculously escaped both electrocution and being hit by a train on the London Underground last night (FRI) after falling onto the tracks.Shortly before 10.15pm a mother pushing her child in a buggy lost her bearings while reading an overhead information board, and mother child and pushchair fell onto the track at Baker Street.The father leapt down to help his family while the couple’s other child, a toddler, looked on from the platform.The three avoided electrocution, missing the 630-volt power lines “by pure luck”, according to a TfL spokesman.They then ducked down into a gully beneath the train lines, to avoid being hit by the incoming southbound Jubilee line service. Members of the public who had witnessed the accident screamed and waved at the driver of the train, who braked hard.The train slowed to a halt but not until the entire first carriage had passed over the heads of the family underneath.TfL officials then cut the power to the track and suspended the Jubilee line while British Transport Police officers evacuated the station.Writing on Twitter Peter Holland said: “We got to the platforms at Baker Street just as this happened, the train whistling, people screaming and running in tears.” Research published in the British Medical Journal found that those who jump or fall onto the London Underground track are half as likely to die if the line has a pit.In 58 cases over 15 months between 1996 and 1997, the mortality rate was 44 per cent for platforms with a pit compared with 76 per cent for those without.