LONDON, June 28 (Reuters) - Britain's economy grew 0.7% in the first three months of this year compared with the previous quarter, above an initial estimate of 0.6% growth, official figures showed on Friday.

The figures come less than a week before Britons vote in an election which opinion polls suggest will see Labour Party leader Keir Starmer replace Conservative Prime Minister Rishi Sunak.

(Reporting by David Milliken; editing by William James)