A London Underground map has been published to help passengers with claustrophobia or anxiety conditions.

The new design highlights routes they can take to avoid long stretches of tunnels.

More than half of the Tube's 270 stations are above ground, with only the Victoria and Waterloo & City lines wholly underground.

Nicky Lidbetter, chief executive of charity Anxiety UK, said: "For those with anxiety conditions such as panic attacks and claustrophobia, we know that travel by the Underground can be problematic and challenging.