The long residence ILR is also very commonly referred to as the indefinite leave to remain in the U.K., which basically means to be and....
https://poetbook.com/read-blog/15518

In order to extend discretionary leave to remain, if you are already living within the borders of united Kingdom then in that case you can....
https://www.visaandmigration.com/service/discretionary-leave-to-remain/55.html