The UK has triggered Article 50 of the European Union's Lisbon Treaty, so formally firing the starting gun on its departure from the 28-member bloc. Brexit is the most important political and economic event in the UK for a generation and has divided the country. A majority of the UK's food sector wanted to stay in the EU and have significant concerns about the post-Brexit future. However, increasingly, businesses are acquiring a pragmatic view about the future - with some real anxieties remaining but a recognition opportunities could be seized - a stance heard last week at the IFE trade show in London. Dean Best reports.