Q1 refers to Quarter 1 (Jan to Mar), Q2 refers to Quarter 2 (Apr to June), Q3 refers to Quarter 3 (July to Sept), Q4 refers to Quarter 4 (Oct to Dec). Rolling three-month data are calculated by comparing GDP in a three-month period with GDP in the previous three-month period, for example, GDP in September to November compared with the previous June to August. Commenting on today’s GDP figures Head of National Accounts Rob Kent-Smith said: “Growth in the UK economy continued to slow in the three months to November 2018 after performing more strongly through the middle of the year. Accountancy and housebuilding again ... (full story)