Epping Ongar Railway: In an age when the network is expanding via Crossrail and Northern Line extension, it's easy to forget that some strands of the network have shrunk. Take the Central Line. Until 1994, the easternmost station was Ongar, not Epping. Today, a heritage line has taken over the route. Board a steam train from Ongar station to North Weald, a diesel from North Weald to Coopersale, and complete the journey to Epping on a vintage Routemaster or Greenline. Source Londonist
Until 1994 there were no “Roads” in the City of London, and now there’s only one, Goswell Road, which became part of the Square Mile in 1994 after boundary changes. There are plenty of Lanes, Streets, and Ways, but public paths weren’t generally referred to as roads until the 16th century. Source Buzzfeed
The most import military structure in London (and possibly Britain) is Pindar. Pindar is a fortress built deep below the Ministry of Defence on Whitehall, it was completed in 1994 and cost a whopping £126.3 million. It's reported that the building is connected to Downing Street and the Cabinet Office via a tunnel running under Whitehall, but these rumours have been denied by government officials. Source Gizmodo
In 1994 Oliver Peyton restored a splendid art deco ballroom near Piccadilly Circus and named it Atlantic Bar & Grill. Once described as the whole reason that everything happened, this place was legendary. You could be there drinking great wines, champagnes and cocktails with a fresh plate of oysters in a secluded booth and wile away the evening. It was the bar every bar wanted to be when it grew up. In place now is the stylish Brasserie Zedel.
From 1994 bus services were operated on London Transport's behalf by private companies. London Transport Buses (LTB) was responsible for planning and managing the service contracts. LTB set about establishing standards for using the roundel as a unified identity for publicity and signs. A white roundel on a red square became the main symbol for the bus network. Source Ltmcollection
Aldwych Tube Station opened in 1907, but closed for the duration of the second world war. It was used to hide and transport museum pieces, and provide shelter from aerial bombardments. It reopened after the war, then closed permanently in 1994 due to lack of use. Since then it's been used as a film location, and you can occasionally tour it. Source Acidcow