Brittany is becoming even more accessible with new airline routes to Brest and Rennes both just over 1 hour's drive from La Garenne. You can also fly to Dinard and Nantes both 2 hours' drive.
By ferry and tunnel driving times are approximately: St Malo 2 hours, Roscoff 2 hours, Caen 3 hours, Cherbourg 3 ½ hours and Calais 5-6 hours.
Alternatively take a look at www.ferrysavers.co.uk, a site thats enables you to compare ferry prices of over 50 major European ferry companies and find cheap ferry tickets to all the most popular ferry destinations. Ferrysavers covers most of the major routes from the UK and across Europe.