Changing flights at British airports is about to become more expensive for passengers arriving from the European Union or the United States. Under new rules published this week, next year the UK will require all visitors from the EU and US (and those arriving from countries not already requiring a visa) to have a £10 travel permit known as an electronic travel authorisation (ETA), a system modelled on America’s Esta system. The ETA requirement will even be imposed on transit passengers, much to the fury of airports like Heathrow. British travellers heading in the other direction will not escape either. The US already requires an Esta costing about £17 and the EU will also require a visa waiver next year.