What percentage of British are blind?

The premise of your question appears to be incorrect. According to the Royal National Institute of Blind People (RNIB), the largest sight loss charity in the United Kingdom, approximately 2 million people in the UK have sight loss, equating to around 3% of the population. However, it's important to note that not all individuals classified as having sight loss are completely blind. The term 'blind' encompasses various degrees of visual impairment ranging from partial sight to complete blindness.