This Philips / Saeco Minuto "super-automatic" bean-to-cup espresso machine (model HD8763) is currently £522 from Amazon (or £550 from Philips). You press one button to deliver a cappucino complete with frothed milk. It also does espresso and other styles of coffee.
You can find more details and videos on Philips' Web site:http://www.philips.co.uk/c-p/HD8763_18/minuto-super-automatic-espresso-machine/overview
I'm not sure whether this deal from Hughes is for today only. They have 31 discounted coffee-making machines at the moment, including 16 bean-to-cup machines at prices from £200 to £700.
There a possible 4% cashback from Quidco on the ex-VAT price (about £10)