Leicester outbreaks is huge compared to other cities, we need to be told why by the government.
Looks to be housing density - communities where more than average numbers of people live together, particularly where 3 or more generations live in the same house, i.e. children, parents, grandparents and maybe even great grandparents. Communities where the wider family live close by, i.e. uncles/brothers/cousins living in the same street, hence far more movement between homes than modern average families who tend to spread out more into different areas.
A few other cities with similar demographics heading the same way - Bradford, Barnsley, Rochdale, all with more than 50 cases per 100,00 population (Leicester is 140 cases per 100,000). The average is 10 cases for 100,000!
47 local authorty areas above 10 but double that (103) local authority areas below 10.