Website is here: http://www.grosvenorhousepublishing.co.uk/
I noticed them because one of their authors showed up on a bookchat forum that I spend time on. A single post promoting her book, fairly politely and not underhandedly.
Grosvenor looks like a straightforward vanity press, though their prices seem high - GBP795.00 and you get an isbn and 5 free copies.
Oh, and "Professional type setters will manually layout your book in high resolution ready for print." which sounds as if they're claiming to be offset, but elsewhere they tout POD: "There are no printing plates involved, no conventional printing presses and no need for minimum runs of thousands of copies, just computers and digital printers."
That looks a tad disingenuous.
Additional charges for proofreading (GBP4.00 per 1000 words) and editing (GBP6.00 per 1000 words).
On the other hand, the author must design his own book cover (using their stock photo library). Sample results can be seen here.
They'll let you design your own website (from their *6* templates), and they'll host it for two years for the paltry sum of GBP299, including registering your domain name.
Graham Taylor, author of Shadowmancer, seems to be the figurehead - literally, as his face stares at you from the header of each page. I can see why he's an advocate of self-publishing, but the fact that his real success was in getting his book picked up by Faber and that only then did it become a bestseller, that little fact is glossed over in the excitement.
I'm not suggesting this is a scam, just yet another overpriced vanity POD sending their hapless authors out to spam message boards.