If you’re soon to visit or already in London, spring Underground strikes in the bustling city of nearly 10 million people will likely impact your ability to get around.

Also known as the “Tube,” the London Underground is the world’s oldest metro system, in operation since 1863. A primary element of the city’s overall transit system, the Tube is experiencing disruptions from April 21 through April 25 due to scheduled RMT (Rail, Maritime, and Transport union) driver strikes. The event is affecting traffic and transportation flow throughout the city for visitors, locals, and those just passing through. The strikes are affecting the entire Tube network.

Eurostar additionally informs that travelers “may need to find an alternative route and allow extra time” if going to or from London’s St. Pancras International Train Station.

The city’s transport authority says “reduced service will run across most [tube] lines, but significant disruption is expected. Any services that do run will be less frequent, very busy, and you may not be able to board the first train.” Also, travelers should expect no service on the Piccadilly and Circle lines, the Metropolitan line between Baker Street and Aldgate, or the Central line between White City and Liverpool Street.

The annual London Marathon is taking place Sunday, April 26. The tube strikes will be over by then. However, the Piccadilly, District, and Waterloo and City Underground lines will be fully or partially closed, so keep that in mind.

How Can Travelers Best Navigate The London Underground Strikes?

London is well-connected and offers many forms of safe, suitable transportation. During strikes, alternative modes of travel may be strained or delayed as they accommodate extra foot traffic. When the Underground is unavailable, get to your destination by Overground, bus, or rideshare. To avoid congested roads and traffic, definitely bike or travel to your destination on foot (if it’s within walking distance). The Overground overlaps with — or is a short walk from — the Underground at several locations, including Whitechapel, Canada Water, Camden Road, Clapham High Street, South Hampstead, Queen’s Park, and Stratford.

There are scheduled bus strikes in East London Friday, April 24, and Friday, May 15, running through the following early Saturday mornings. The seven bus routes affected by the latter will be the 8, 25, 205, 425, N8, N25, and N205. London’s transport authority cautions about the bus disruptions but says, “We expect that the 25 and 425 will run a near-normal service for most of the day throughout the strikes.”

Pad travel time estimates to account for potential transportation delays. Leave earlier than usual to ensure you arrive at your destinations on time. Also, practice patience and consideration during the London Underground strikes, especially while using other modes of travel and interacting with transportation workers.

Forthcoming London Underground worker strikes are scheduled for:

  • May 19–20 (12 p.m. Tuesday to 11:59 a.m. Wednesday)
  • May 21–22 (12 p.m. Thursday to 11:59 a.m. Friday)
  • June 16–17 (12 p.m. Tuesday to 11:59 a.m. Wednesday)
  • June 18–19 (12 p.m. Thursday to 11:59 a.m. Friday)