Denise,
The status omni-directional aerial is not the best TV aerial in the world, their direction aerial (which you need to turn to get the best picture) seems to be reasonably OK.
Freeview needs the best possible signal to work properly, so the last aerial I would use is the Status omni-direction.
But since your next site has a TV hook up, all you'll need is a long TV aerial cable with plugs on both ends. The TV points are usually on the site power poles - so you will need a TV aerial cable at least as long as your site power hook up lead.
You may also want to buy a double-ended adaptor for the TV aerial lead in case the site has a plug or a socket on the power pole - a trip to B&Q should get all the stuff you will need.
Robert