The whole discharging process is a farce.
My MIL was blue lighted to A&E on New Years Eve. Spent 48 hours on a trolley in an A&E corridor because there were no beds. A nurse admitted she wouldn't be getting moved to a ward until the afternoon two days later because there'd be no discharges on New Years Day due or the day after due to admin staff needed for the discharge paperwork being on holiday and the hospital pharmacy having a skeleton staff and not doing discharge med issues.
Same happens at weekends. If you're not out by Friday lunchtime, you're still going to be there Monday morning for the same reasons. Happened to me, my OH, my mother and my FIL - all "signed off" by the doctor for discharge on the Friday, but with staff off Friday afternoon and only skeleton staff over weekend, it wasn't until Monday that the gears started turning.
It's why A&E is packed at weekends - it's full of people needing to go onto the wards but with no one being discharged, they're stuck languishing in A&E due to no beds.
It's that kind of thing that the NHS needs to tackle. It's basically a 4 day service in so many areas when it needs to be 7 days across the board.