One of the UK's tallest structures has come crashing down in a spectacular demolition.

The Grain power station chimney was blown up by experts Brown and Mason at 11am.

Dozens of people gathered at the site this morning - including around 40 former workers who were invited to see the chimney come down.

Video: Watch the demolition here

Among them is Bill Cliff, the former plant manager, who described it as a momentous day.

He added: "It is tinged with sadness but it is also a celebration for former workers.”

Everyone on site was given a safety briefing and warned there was lots of dust when the chimney collapsed.

The final checks were made at 10.45am, with people gathering to watch getting a 10-minute warning.

There was a final wailing siren at 11.15am to give the all-clear.

The 244m (801ft) chimney is taller than Canary Wharf, and will be the tallest-ever concrete structure to be brought down in the UK.