Google - What is the harchest sentence possible on prisoners in the uk?

you know i think it depends on the crime or violation i know i wouldn't want to have to stay in one of their jails it would be scary to find out the research on them now i looked around on the internet for answers this is what i saw a group of rioters individualy sentance to over a year they talk about 6 months or more depending on the crime hope that helps you the public is saying that sentance for riots is to severe