If you toook the time to find the facts on this case you'd discover that the UKBA will be deporting him but the paperwork is not yet completed as they need to wait for the Ukraine to authorise it, and the courts let him out on the streets not the UKBA.
And an operation that can't do everything it is supposed to due to lack of resources, the exact same as my company has a massive backlog of work to get through and it's growing.That's capitalism and I decide who gets my money. The UKBA aren't a company but a state funded and run operation.