[Shane]

if you do a search for MarksAndSpencer, marks, markandspencer.com etc.

You'll most likely see "search marksandspencer.com" button under their listing so enter a term and do a search and you'll get all the results from their site for that term.

wrapped around those marksandspencer site results will most likely be lots of nice traffic leakage potential in the form of adwords.

It would seem google is seeking to monetise brand and url traffic by offering this "service" to users, at the expense of the brand searched, seems to be only a chosen couple (I've only found marks and tesco) although there will be more no doubt, affected at the moment so probably trialing still.