March 21 (Reuters) - The following are the top stories in the Financial Times. Reuters has not verified these stories and does not vouch for their accuracy.

Headlines

- London's Heathrow airport to be closed all day after fire cuts power

- GB Energy makes first investment with 110 million pounds for clean energy

- European military powers work on 5-10 year plan to replace US in Nato

- Accenture warns Elon Musk's Doge-led spending crackdown is hitting revenues

Overview

- London's Heathrow airport has been forced to close until midnight after a fire at a nearby electricity substation caused a "significant power outage".

- The first investment for the UK's new state-owned energy company Great British Energy will be 110 million pounds in grants to fund solar panels and other clean energy production.

- Europe's biggest military powers are drawing up plans to take on greater responsibilities for the continent's defence from the US, including a pitch to the Trump administration for a managed transfer over the next five to 10 years.

- Accenture has warned that Elon Musk's efforts to slash U.S. government spending have started to affect its revenues, with the consulting group also highlighting threats from global economic uncertainty.

(Compiled by Bengaluru newsroom)

((globalnewsmonitoring@thomsonreuters.com))