The eclipse, which means up to 90 per cent of the Sun will vanish behind the Moon is happening tomorrow (August, 12) night. The sun will be visible in Oxford, and viewers should be ready between 6 to 8pm for the best views. READ MORE: Town house neighbouring the famous 'Headington Shark' up for £600kThis is the closest to a total eclipse the British Isles have seen since 2015, and the next total solar eclipse visible form the UK isn't until 2090. Even at 90 per cent coverage the remaining sliver of the Sun is intense enough to cause permanent eye damage. Brits have also been urged not to watch the solar eclipse through their phones or they risk causing damage to their device.