that means staying to the end of every shift... be careful what you wish for.
more or less the norm on my sector with EGs rendered obsolete by spin shifts, early starts or late finishes.
We'd have needed another 20+ controllers to have covered the shortfall made up by AAVAs in TC in July. Overtime is very cheap labour for NATS, even more so if you add training costs, pension contribution, etc.
Managment need AAVAs more than we do.