cavity wall insulation installers

Hi,

Can anyone reccomend any nationwide cavity wall insulation installers?

I would like to have this done on my property but have read plenty about shoddy work carried out by firms installing this stuff.

Thanks

have a look on the rated peoples website, might help to get a decent one.
www.ratedpeople.com/

I had mine done recently by the Mark Group. it is a detached 2 story building, I paid for it, though they are doing loads for E.On for free for thouse over 60.

I think the cost was £140. The guys came on time, were very professional. Did the job quickly and efficiently, even filled the holes with white cement to match the walls.

Overall I had a good experience, and I suppose if E.On are using them, they can't be a bad bunch, though as with anything you can get good and bad in any outfit.

Thanks.

I have a couple of wires that cross the walls to feed outside lights, could these be a problem?
Also what material did they use on yours?