Britain's FTSE 100 held its gains on Friday after Prime Minister Theresa May announced her resignation date as head of her party in a widely expected move that nevertheless raises the prospect of a successor likely to seek a more hardline Brexit deal.
Brexit sensitive housebuilders and airlines slid on Wednesday as rumours circulated that ministers could oust Theresa May after her latest EU exit plan failed to win support, while exporters lifted the FTSE 100 as the pound weakened.
The FTSE rose on Tuesday, helped by a rally in homebuilders amid news of a proposed parliamentary vote on a second Brexit referendum and gains in Asia-facing stocks after the United States relaxed restrictions on China's Huawei.
A re-nationalisation of the UK water industry could raise customer bills and lower investment, Severn Trent said on Tuesday, as utility companies laid the ground for a potential fight with a future Labour government.
Britain's main share index slipped again on Monday as worries over international trade increased on the back of U.S. curbs on China's Huawei, while weak results from Ryanair triggered a sell-off in airlines across the board.
Rallying banks and mining stocks lifted Britain's FTSE 100 on Thursday, but weak earnings hit luxury brand Burberry and Thomas Cook was floored by a profit warning.
The head of Britain's National Grid criticised the opposition Labour Party's plans to renationalise energy networks, saying it would increase costs for consumers and could prompt legal challenges, as the firm's profit fell slightly.
Hopes that the United States' trade tensions with China and Europe will dissipate, combined with a weaker pound, lifted Britain's main index higher on Wednesday, as a slew of earnings reports also drove share moves.
Britain's CYBG Plc, owner of Clydesdale and Yorkshire Bank, swung to a profit in the first half of the year and reported higher lending in a tight U.K. mortgage market on Wednesday, sending its shares up 10 percent.
Rising demand for Greggs Plc's vegan sausage rolls prompted the British baker to raise its annual forecast for the second time this year, sending its stock price to an all-time high.