HS2 workers carry out tree felling works alongside the Grand Union Canal in connection with the HS2 high-speed rail link on 21 September 2020 in Harefield, United Kingdom. Anti-HS2 activists continue to try to prevent or delay works for the controversial £106bn HS2 high-speed rail link on environmental and cost grounds from a series of protection camps based along the route of the line between London and Birmingham.