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
Waltham Abbey (town) building, and sold the former building to an Evangelical Free church. Waltham Abbey is served by Waltham Cross Station on the British Rail network, Theobald's Grove and Chingford stations on the London Overground network, and its nearest London Underground station is Loughton, served by the Central Line. Waltham Abbey is located on the M25 London Orbital Motorway, allowing efficient transport by motor vehicle around London. Several bus routes are operated in Waltham Abbey, some of which were originally operated by London Transport. Waltham Abbey (town) Waltham Abbey is a suburban market town in the Epping Forest District of Essex, the