Along with professional services, media companies are concentrated in London and the media distribution industry is London's second most competitive sector. The BBC is a significant employer, while other broadcasters also have headquarters around the City. Many national newspapers are edited in London. London is a major retail centre and in 2010 had the highest non-food retail sales of any city in the world, with a total spend of around £64.2 billion. The Port of London is the second-largest in the United Kingdom, handling 45 million tonnes of cargo each year.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the second largest port in the UK?
The Port of London