“UK National Statistics - Economic terms
...
Trade in Services - Provision of services between UK residents and non-residents, and transactions in goods which are not freighted out of the country in which they take place, e.g. purchases by tourists etc.”
( http://www.statistics.gov.uk/about/glossary/economic_terms.a... )


“Wikipedia
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Trade in Services refers to the sale and delivery of an intangible product, called a service, between a producer and consumer. Trade in services takes place between a producer and consumer that are, in legal terms, based in different countries, or economies, this is called International Trade in Services.”
( http://en.wikipedia.org/wiki/Trade_in_services )