As a newbie to this club I would like to bring something to help you keep your cars looking good.
Tip for cleaning cloth seats and removing the bobbles" and pet / human hairs and dust that just laugh at your hoover. Go to your local equestrian shop and buy yourself a curry comb (about a quid). Its a rubber brush that is used for grooming horses. Use before hoovering your seats. Brush in straight lines from top to bottom and back to front of your seats. You will see the dust, hairs and bobbles pile up like magic. Just hoover up the residue and bobs your uncle, nice clean seats again.
For showroom paintwork, Buy yourself a "Mothers" claybar system from ebay
http://cgi.ebay.co.uk/Mothers-07240-California-Gold-Clay-Bar-System_W0QQitemZ350218317959QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item518aa37087&_trksid=p3286.m63.l1177&_trkparms=%7C293%3A1%7C294%3A50 pick a dull day, wash and dry your car . Then use the clay bar as instructed with the kit. It will remove all of the surface rubbish and leave a perfect surface for polishing with a good carnuba wax. This is how motor show cars are prepared. It will take a morning to complete it, but its well worth it for the results.