Following a joint operation carried out by the Metropolitan Police and Avon and Somerset Police, a 34-year-old man was arrested in the Bristol area in the early hours of Saturday (July 13).

"The man, whose image had been released by officers on 12 July, was safely detained by Avon and Somerset armed officers at Temple Meads Station and was taken into custody, where he remains," read the statement released by the Metropolitan Police.

He will be taken to London for questioning later on Saturday, police said.

Extensive enquiries are ongoing, however at this stage police said they are not looking for anyone else in connection with the incident.

Deputy Assistant Commissioner Andy Valentine said: "This is a significant development in our investigation and I would like to thank the public for their support."

"We understand the concerns of local communities in both Bristol and London and officers will remain in the Clifton and Shepherd’s Bush areas over the coming days to reassure those affected by this tragic incident," Andy Valentine said.

“Anyone with any concerns is encouraged to speak with them.”