The economy of England is the largest part of the UK's economy, which has the 18th highest GDP PPP per capita in the world. England is a leader in the chemical and pharmaceutical sectors and in key technical industries, particularly aerospace, the arms industry, and the manufacturing side of the software industry. London, home to the London Stock Exchange, the United Kingdom's main stock exchange and the largest in Europe, is England's financial centre, with 100 of Europe's 500 largest corporations being based there. London is the largest financial centre in Europe, and as of 2014 is the second largest in the world. Manchester is the largest financial and professional services sector outside London and is the mid tier private equity capital of Europe as well as one of the growing technology hubs of Europe.