An outage at Google’s cloud services in the UK has caused widespread disruption, hitting courts and leaving millions of customers unable to access or send cash at banks including Lloyds, HSBC and Revolut .

Google blamed a “power event” for the failure at its London-based Cloud computing operations on Tuesday, which affected its “europe-west2-b zone”.

The US tech company said services were starting to come back online as of 1pm London time, and were back online for most customers by 3pm, but not before critical financial transactions and legal proceedings were disrupted.

That included the video system used by defendants, lawyers and other parties to attend court hearings remotely across England and Wales, which failed to work throughout the morning.

The issue was believed to have delayed several hearings, as the system is often used for defendants who are in custody but need to attend court.

Meanwhile, bank customers at high street lenders and leading digital bank Revolut were left in limbo as services…