I am pretty close to this, I work with CA7 for another bank this article spells it out quite well:
http://www.guardian.c...eltdown?newsfeed=true
as does this excerpt from the Telegraph web site from an ex RBS employee:
"…I’m anonymous for very obvious reasons, having been one of the recent 1000+ to find their roles now being done from Chennai, however I have been speaking to a few ex-colleagues who are still there and can confirm that a CA7 upgrade was done, went horribly wrong, and was then backed out (which will have been done in typical RBS style – 12 hours of conference calls before letting the techie do what they suggested at the very start).
My understanding is that most, if not all, of the batch team were let go and replaced with people from India and I do remember them complaining that they were having to pass 10-20+ years worth of mainframe knowledge on to people who’d never heard of a mainframe outside of a museum…"