I don't think you mean Thomas Cook. They have Jamie and Louise Rednapp.
Is this one of the Thomson ads?
If so, I don't think there's any reason to think any of them are actual employees anymore than John Henshaw works in a Post Office or that dancer bloke works for We Buy Any Car. :-)
This advert is one which really annoys me (funny how we like and love different adverts) - Beth Wignall has a very unnatural walk as she struts through the different scenes, doesn't look natural at all to me.
I've just seen some (the only, I believe) footage of Beth Wignall on YouTube (Common Fears Preview) and, although she's a similar looking actress, I'm sure this one on the Thomson ad is not her...although I appreciate somebody has named her at visit4info as being in the ad. They do get it wrong sometimes at visit4 and I've corrected a number of their errors in the past.