London's main FTSE 100 share index closed above 6,000 on Thursday, the first time it has ended above the key psychological level since May.
The stock market last closed above 6,000 in May
Boosted by record highs this week on the Dow Jones in New York, and takeover talk in the steel sector, the FTSE 100 finished up 38 points to 6,004.5.
Steel group Corus was the biggest riser, up 16% after Indian firm Tata said it was considering a takeover bid.
The FTSE was also helped by the Bank of England keeping rates on hold at 4.75%.
However, the Bank's decision had been widely expected.
Cooling oil prices
Mining stocks also enjoyed strong gains on Thursday owing to continuing increases in global metal prices.
Among the mining stocks, BHP Billiton was the biggest riser, gaining 4%, followed by Rio Tinto, up 3.6%.
In the US the Dow Jones has been benefiting from cooling oil prices and reduced inflation fears.
The FTSE's record high of 6,950 was set in December 1999.