London's landmarks lit up with Belgian national colours in solidarity after Brussels terror attack

The London Eye lit up in the colours of the Belgian flag. Credit: Anthony Devlin / PA Wire/PA Images

London's major landmarks have been lit up in the Belgian national colours as a mark of solidarity following the Brussels terror attack.

In London the National Gallery, Tower Bridge, London Eye, National Gallery and the fountains at Trafalgar Square were all lit with the colours of the Belgian flag.

London's Tower Bridge alternated between the three colours of the Belgian flag. Credit: Anthony Devlin / PA Wire/PA Images
The National Gallery also showed it's support for the people of Brussels. Credit: Anthony Devlin / PA Wire/PA Images

Today there will also be a vigil in Trafalgar Square with a 25 metre silk flag being placed on the central staircase.

People wrote messages in chalk in Trafalgar's Square mimicking the messages left on the ground at Place de la Bourse in Brussels. Credit: Anthony Devlin / PA Wire/PA Images
People left messages in Trafalgar Square in solidarity with Brussels. Credit: Anthony Devlin / PA Wire/PA Images

Belgium is observing three days of national mourning after 31 people were killed and more than 250 people injured in three bomb blasts.