90 days from today is Sun, 24 May 2020
0-199 days = Statutory Sick Pay of £87pw or approx £377 pcm
As most officers go on half pay after 181 days they will get 18 days SSP
After 199 days the officer goes on Employment Support Allowance ESA (after going through a telephone interview) of roughly £314pcm for a period of 13 weeks at least. A link to read about ESA is at https://www.gov.uk/employment-support-allowance/what-youll-get
Group Insurance - 20% of your monthly gross pay which is an average of about £600 for a top pay scale Constable and £700 for a top pay scale Sergeant. You will receive a letter from the Federation office explaining how to claim the group insurance.