The paper assesses the extent and sources of the UK's comparative adva
ntage within the European Union (EU). It finds that both inter-industr
y and intra-industry trade are important despite clear aggregation eff
ects. Having established that there is a significant degree of inter-i
ndustry specialization the sources of this are analysed, using a facto
r-content approach. Results are reported for aggregate factors of prod
uction and, in the case of labour, by disaggregated skill categories.
A key finding is that the UK's net trade with the EU is driven more by
a specialization in specific types of skill than by an overall endowm
ent of human capital. The results also suggest that the inter-industry
specialization cannot be explained by comparative advantage alone.