Yes, DIY kit from Ebay which should take a couple of hours to fit. No drilling.
http://www.ebay.co.uk/itm/No-Holes-In-Bumper-Electromagnetic-Parking-Sensors-UK-Designed-Engineered-/360997872092?pt=UK_In_Car_Technology&hash=item540d2661dc
This is a conductive strip that is stuck to the inside of the bumper. I actually bought this last year and when it arrived I thought it looked a little cheap and would definitely not work so I stuck it in a drawer until about a month ago. It really does work, it needs the bumper removing but its not too difficult.
Does what it says on the box!!