The leading indicators the OECD uses for the UK include new car registrations, the Confederation of British Industry's business climate survey, a measure of the stocks of finished goods and a measure of consumer confidence, all weighted, added together and compared to an estimation of the trend.

BBC: The popcorn route to recovery

After falling for four consecutive months, the Ifo business-climate survey rose in June.

ECONOMIST: Overview

In Ifo's monthly survey, about 7, 000 companies are asked for their views of the current business climate and their outlook over the coming six months.

BBC: NEWS | Business | German confidence at two-year low