14-day self-isolation period reduced by up to two thirds on receipt of a negative COVID-19 test from a private provider after 5 days of isolation
https://www.gov.uk/government/news/t...ional-arrivals
Link above also mentions support for English airports but gives no detail - reported elsewhere as "equivalent to the business rates liabilities of each airport in 2020/21, capped at £8million per site and subject to certain conditions."