I went for this deal - the clock arrived and I have been using it for a few days now. I LOVE IT. When I wake up I am now conscious enough to make the right choice (which is to get up). It was also on sale at this price on Amazon but it's now gone back up to the £85 - £100 range there, depending on seller.
If you want more info than is offered on the Boots page, here's a better description from Amazon:http://www.amazon.co.uk/Philips-HF3461-Wake-Up-Light-Alarm/dp/B000VI7K2C
There's also plenty of information on Google, but there are a few different models out there and the one Boots is selling is the HF3461. No idea if this is instore as well. Don't forget extra points codes (attached)! And it's free delivery due to the price (over £45 or whatever their threshold is).