Economic growth will speed up again in the coming months as investment rises and the global recovery means more foreign demand for UK exports, economists believe.

Growth reached a low of 0.2pc in the first three months of the year, edged up to 0.3pc in the second quarter and will keep on getting stronger, the National Institute for Economic and Social Research (Niesr) believes, rising to 0.4pc in the third and fourth quarters and 0.5pc into early next year.

Overall the analysts believe the UK will grow by 1.7pc this year, 1.9pc in 2018, 2pc in 2019 and 1.8pc in both 2020 and 2021.