What Henry said is correct, unemployment arrises from a current account deficit due to the lack of demand for domestic goods and services. Here in the UK there is high demand for invisible services, like our financial services, but hardly any demand for cheap visible goods, for instance clothing. In the UK, we specialise in high quality and expensive goods like pharmaceuticals, aircraft engines etc.. Not the cheaper goods the likes of China can produce. One reason for this may be the implication of the minimum wage here in the UK.
Good Luck!!