The London Underground (Tube) strike has caused significant disruption to the city's transport network, with commuters facing long queues and delays. The strike, led by the Rail, Maritime and Transport Workers (RMT) union, is in response to the introduction of a voluntary four-day working week, which the union believes will impact driver safety and flexibility. While some lines are operating close to normal, others are severely disrupted, with long queues for buses and taxis at Victoria Station and King's Cross. The strike has also impacted businesses, with delicatessen owner Simone Di Iulio fearing a drop in footfall and a coffee shop worker noting a reduction in customers. The RMT's concerns about driver fatigue and reduced flexibility have been echoed by some drivers, who support the strike action. However, Transport for London (TfL) director Nick Dent has rejected the RMT's claims, stating that safety is a priority and that the changes are voluntary. The strike has also raised questions about the role of other unions, with Aslef, the other main drivers' union, supporting the proposed changes. As the strike continues, commuters are facing long journeys and frustration, with some having to re-route and others facing severe delays on the Elizabeth line. The impact on London's transport network and businesses is expected to continue until the dispute is resolved.