Gone to another continent.
As an Ex RBS IT employee (and thankful for it) I can assure you that the terms will be good for redundency, the dublin office has been open since 1997, the terms for the Ulster Employees was something ridiculous like 6x there monthly salary for each year worked plus extra if they had children.
I expect that all of the jobs are actually going off to India, not that senior management would admit that, projects are simply closed in the UK and Ireland and no new projects are started in the UK/Ireland. That way they never have to admit they are offshoring.
There are still plenty of IT workers coming over from India on visas while UK workers are allowed to rot on the dole queue. The London office has a considerable number of them. Not much you can do when the government allows it. Much like most of the manufacturing industry going offshore it seems that anything and everything that can go will go, all the while the government sits back and watches without wanting to intervene.
Unions are good but in the face of cuts can do very little, especially as the union/management relationship is more or less dead at RBS.