I first spotted the novel looking Garden Groom Midi electric hedge trimmer on the Crocus web site where they are selling it for £69.99 including a free volume bag.
Looking around to see who else stocks the Garden Groom Midi I first found Robert Dyas offering the basic unit without the optional volume bag it for £59.99, Homebase also list it.
The Garden Groom Midi is a mains powered electric hedge trimmer that features an enclosed rotating blade.
The video below demonstrates the Garden Groom Midi in action.