THE Prince of Wales on Saturday visited survivors of the horrific rail crash which killed seven people.

Prince Charles was said to have been "very saddened" when he was told about the tragedy as he returned to Britain from holiday.

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Meanwhile, calls were being made for an immediate public inquiry into the crash by a solicitor acting for victims of previous rail disasters at Southall and Ladbroke Grove.

Crash investigators have begun the grim task of searching through the wreckage of the Potters Bar train in an an effort to discover the cause of the disaster.

Several people remain in a critical condition and a further 75 people were injured in the accident when the four carriage Kings Cross to King's Lynn electric train derailed at an estimated 100mph.

Investigations into the cause of the crash are centring on a set of points 200 yards south of the Potters Bar station, which have been cordoned off by police and covered with a tent and tarpaulin.