I think Wadey is referring to drive away awnings - the big clip on "tents" that attach to the side of your van, but can be left erected on a campsite when you drive down the beach for the day, rather than a simple sun/rain shade.
Like these:
http://www.outwell.com/en/Products/drive-away-awningsI don't really know what's a good one, but Vango and Outwell make them (amongst others) and I have owned and highly rated their family tents over the years.
Maybe hit the big camping/caravanning stores when the season starts around Easter, and have a look at a bunch of them all set up? That way you can see exactly what you are getting for your money. That's what I'd do anyway!
2011 SWB medium roof 2.2l Mk7 115 T300 in Frozen White. Stealth Camper converted.
"It's better to burn out, 'cause rust never sleeps..."