Southend-on-sea May Bank Holiday Monday.   A group of women visiting Southend, sunbath fully clothed. As temperatures reached 25c at Southend-on-sea during the end of May Bank Holiday Monday and with the loosening of the UK government social distancing measures it allowed people more freedom to get some much need sun and top up their levels of vitamin D. Research by The World Health organisation (WHO) in 2019 in 20 European countries, showed that the role of Vitamin D can help in the prevention of Coronavirus Disease.