The FA has decided that all Grassroots Football is concluded for the 2019/20 season. The official statement is attached to this news item
You can see the statement from the Sussex FA on what it means to the leagues

In summary the following leagues that we play in have confirmed they have stopped
SCEFL - season null & void, no promotions & relegations
Sussex Sunday - Season null & void
Crowborough & District Junior Youth League - Season abandoned
Isthmian league - immediate end with results expunged

Kent Youth League will make a decision on Tuesday 31st March - When we have the information we will provide a further update

As always stay safe and look after those who are most vulnerable
Remember the NHS Advice around Covid 19