LONDON—England will allow fully vaccinated visitors from the European Union and the United States to arrive without quarantine from next week, the transport minister said on Wednesday, in a huge and long-awaited boost for airlines and travel companies. Britain’s travel industry has heavily criticised the government for being too slow to open up, saying it has squandered its lead in the global vaccine rollout and giving the EU a headstart in attracting tourists. The government said in a statement that from Aug. 2 travellers with U.S. and EU-approved vaccines would not have to quarantine. That will cover Britain’s top nine biggest markets by visitor volumes pre-pandemic. The opening up of England would likely be followed by the rest of the United Kingdom. Travellers will, however, still have to take a COVID-19 test before departure and soon after arrival in England, transport minister Grant Shapps wrote on Twitter. The move will …