Events to mark the build-up to the Paralympic Games will be focused on London on Friday, with the torch being carried to a number of the capital's best-known landmarks.

The flame will visit the Royal Opera House and the Houses of Parliament following the lighting of a ceremonial cauldron in Trafalgar Square.

Torchbearers will also carry it to see performers preparing for the Notting Hill Carnival and take a trip on the Docklands Light Railway as it travels around the capital.

The day will start off with the cauldron being lit in Trafalgar Square by Claire Lomas, who became the first person to complete a marathon in a bionic suit earlier this year.

Ms Lomas, who was left paralysed from the chest down following a horse riding accident in 2007, walked the London Marathon route in a pioneering robotic suit raising £204,000 for Spinal Research.

She will light the cauldron using the flame that was created at Scafell Pike.

Three other Paralympic flames were struck by Scouts on the summits of the highest peaks of the home nations on Tuesday.

As well as Scafell Pike in England, they were lit on Snowdon in Wales, Ben Nevis in Scotland and Northern Ireland's Slieve Donard.

As the start of the Games draws nearer, Friday will also see the Agitos, the official symbol of the 2012 Paralympics, be suspended from Tower Bridge, where it will remain until September 15.