M25 motorway and Thurrock off junction 31 (to the east of London). Cobham services opened on 13 September 2012. Originally, the M25 was unlit except for sections around Heathrow, major interchanges and Junctions 23–30. Originally, low pressure sodium (SOX) lighting was the most prominent technology used, but widening projects from the 1990s onwards have all used high-pressure sodium (SON) lighting and this has diminished the original installations. By 2014 only one significant stretch was still SOX-lit (Junction 25–26) and the units were removed the same year. The motorway passes through five counties. Junctions 1A–5 are in Kent, 6–14 are in Surrey, 15–16
London Underground in a station. Similarly, Poems on the Underground has commissioned poetry since 1986 that are displayed in carriages. The Underground (including several fictitious stations) has been featured in many movies and television shows, including "Skyfall", "Die Another Day", "Sliding Doors", "An American Werewolf in London", "Creep", "Tube Tales, Sherlock" and "Neverwhere". The London Underground Film Office received over 200 requests to film in 2000. The Underground has also featured in music such as The Jam's "Down in the Tube Station at Midnight" and in literature such as the graphic novel "V for Vendetta". Popular legends about the Underground being haunted