No she normally comes over to London to see family a couple of times a year apparently, thats what I remember someone saying on this forum a few months ago when she was last over here.
It's worth noting that it's the start of the annual school summer holidays in England until early September. During this time of year, it's common for the normal presenters with children to take time off, with cover not being the norm.
Watching Outside Source for the first time in any great length. I don't know if it's because Karin is hosting the show but it's terrible. Extremely gimmicky. She can't cope without looking at the autocue and there's been about 4-5 times where the screen hasn't worked or she hasn't pressed the right part of the screen. Very amateur.