Growth increased steadily from 0.4 in Q2 this year, to 0.6 in the three months to July, according to the Office for National Statistics (ONS).
While production slipped, a strong offering from construction helped growth, while events such as the World Cup and the recent heatwave helped bolster retail sales.
“The dominant service sector again led economic growth in the month of July with engineers, accountants and lawyers all enjoying a busy period, backed up by growth in construction, which hit another record high level,” said ONS head of GDP Robert Kent-Smith.
GDP growth is at its highest point since August last year, when it was also 0.6%.
GDP grew by 0.3% in July, compared to 0.1% in June, with services growing from 0% to 0.3% over the same period.
In May, research found that the UK professional services sector grew by 25% in Q2, the fastest growth in business volumes since august 2015.