Bank of England governor Mark Carney says the UK economy will pick up

A useful link here relating to Economic Growth 

See below to find the relevant section within each specification:-

Edexcel spec reference 2.5.1 a) Factors which could cause economic growth               

AQA spec reference The various demand-side and supply-side determinants of short run growth of real national income and the long-run trend rate of economic growth 

OCR spec reference P17 Evaluate the causes of economic growth in the short and long run