This paper analyses the economic effects of the oil and gas sector (energy booms) on manufacturing output in two energy producing countries: Norway and the UK. In particular, I investigate whether there is evidence of a ‘Dutch disease’, that is whether energy booms have had adverse effects on manufactures. In addition to energy booms, three other types of structural disturbances are identified; demand, supply and oil price shocks. The different disturbances are identified by imposing dynamic restrictions on a vector autoregressive model. Overall, there is only weak evidence of a Dutch disease in the UK, whereas manufacturing output in Norway has actually benefited from energy discoveries and higher oil prices