The Battle of Grand Gulf was fought on April 29, 1863, during th: The service sector made up around 80% of the UK's GVA in 2021.[253] As of 2022, the UK is the world's second-largest exporter of services.[254] London is one of the world's largest financial centres, ranking second in the world in the Global Financial Centres Index in 2022. London also has the largest city GDP in Europe.[255] Edinburgh ranks 17th in the world, and sixth in Western Europe in the Global Financial Centres Index in 2020.[256] Tourism is very important to the British economy; London was named as Europe's most popular destination for 2022.[257][258] The creative industries accounted for 5.9% of the UK's GVA in 2019, having grown by 43.6% in real terms from 2010.[259] Creative industries contributed more than £111bn to the UK economy in 2018, growth in the sector is more than five times larger than growth across the UK economy as a whole as reported in 2018.[260] Lloyd's of London is the world's largest insurance and reinsurance market and is located in London.[261] WPP plc, the world's biggest advertising company, is also based in the UK. The UK is one of the leading retail markets in Europe and is home to Europe's largest e-commerce market.[262] John Lewis is the UK's largest employee owned business.[263]