A report by a former prison governor and deputy director at the Ministry of Justice has recommended that six major London prisons are closed.
Brixton, Feltham, Holloway, Pentonville, Wandsworth and Wormwood Scrubs would be amongst 30 nationwide that could be replaced by around ten larger ones.
More top news
Police were called to a fight between two groups of people on the petrol station forecourt at Cobham services.
The barriers are part of a series of measures put in place by the Metropolitan Police.
Resident group Justice 4 Grenfell say they were not consulted and will raise concerns about the appointment at the highest level.