GLC begins detailed London Ringways planningJan 1, 1966Labels: Greater London, Ringways planRoads org ukGuardian
Blackwall Tunnel southern approach road opensApr 25, 1969Labels: Blackwall Tunnel, East CrossRoads org ukBlackwall Tunnel
GLDP public inquiry opens over Ringways planJul 1, 1970Labels: GLDP public, Greater LondonRoads org ukHansard
Westway and West Cross Route openJul 28, 1970Labels: Westway, West CrossRoads org ukWestwayWest Cross Route
Layfield report delivered on GLDP objectionsDec 18, 1972Labels: Layfield report, Frank LayfieldHansardHansard
East Cross Route construction completesJan 1, 1973Labels: East Cross, Ringway 1East Cross RouteBlackwall Tunnel
Outer-ring construction begins that becomes M25Jan 1, 1973Labels: Outer ring, M25 precursorM25Roads org uk
Government statement responds to GLDP inquiryFeb 19, 1973Labels: Government statement, ParliamentHansardHansard
M25 route consolidated from Ringways 3 and 4Jan 1, 1975Labels: M25, Ringways consolidationM16Roads org ukM25
First M25-related section opens (South Mimms–Potters Bar)Sep 1, 1975Labels: South Mimms, M25 sectionM25CIHT Archive
Final M25 link opens, completing the orbital routeOct 29, 1986Labels: M25 completion, Dartford CrossingM25CIHT ArchiveCommercial Motor