August 26, 2017 - London, England, United Kingdom - Notting Hill police installed anti-terror road barriers before Carnival on August 26, 2017, London, UK. Tomorrow starts the Notting Hill Carnival parade. Caribbean culture carnival will attract hundreds of thousands of people to the streets of Notting Hill. The risk of terrorist attack is higher than usual, says police. (Credit Image: © Dominika Zarzycka/NurPhoto via ZUMA Press)