Improved investor sentiment across Europe and relative short-term stability from a delayed Brexit helped push London stocks to a six-month high on Tuesday.
The FTSE 100 jumped 33.05 points to 7,469.92, up 0.44%.
The market optimism spread across European markets, with the German Dax and French CAC also reaching six-month highs, up 0.36% and 0.67% respectively.
David Madden, market analyst at CMC markets UK, said: “The fact that Brexit has been delayed, and the European Central Bank are willing to launch another round of targeted lending later this year, has helped investor appetite.
“US-China trade talks have been moving in the right direction recently, and that has been a factor too.”
Shares in JD Sports closed higher after the company reported a record year for revenues despite the UK’s continued high street crisis.
Its stock hit a record high of 576.6p, after it jumped by 44.6p.
Construction firm Galliford Try saw shares plummet after it issued a profit warning and announced plans to undertake a strategic review.
Shares slumped by a fifth to 576.5p, after it said the review would result in reduced profitability in the current year and it anticipated a fall in full-year profit of between £30m and £40m.
But the pound slipped in the afternoon, oblivious to the steady unemployment figures reported earlier.
Sterling fell 0.4% against the US dollar to 1.304 and was 0.3% down against the euro at 1.156.
Wall Street had a bullish start, as the S&P 500 surged to its own six-month high to close at 2907.24 points, buoyed by improvements in US-China trade talks.
The Nasdaq and the Dow Jones Index closed up 0.3% and 0.26% respectively.