Magner	http://www.magnerscider.com/
Magpie Brewery	http://www.magpiebrewery.com
Maldon	http://www.maldonbrewing.co.uk/
Mallard Brewery	http://www.mallard-brewery.co.uk
Malvern Hills Brewery Ltd	http://www.malvernhillsbrewery.co.uk
Marble Beers Ltd	http://www.marblebeers.co.uk
Marstons plc	http://www.marstons.co.uk
Masters Brewery	http://www.mastersbrewery.co.uk
Matthews Brewing Co Ltd	http://www.matthewsbrewing.co.uk
Mauldon's Ltd	http://www.mauldons.co.uk
Mayflower Brewery	http://www.mayflowerbrewery.co.uk
Maypole Brewery	http://www.maypolebrewery.co.uk
McCowan's Brewhouse
McMullen & Sons Ltd	http://www.mcmullens.co.uk
Meantime	http://www.meantimebrewing.com/
Meantime Brewing Co Ltd	http://www.meantimebrewing.com
Melbourn Brothers Brewery	http://www.melbournbrothers.co.uk
Merrimans Brewery	http://www.e-oldfart.com
Mersea Island Brewery	http://www.merseawine.com
Milestone Brewing Co	http://www.milestonebrewery.co.uk
Milk Street Brewery	http://www.milkstreet.5u.com
Miller Brand	http://www.millerbrands.co.uk/
Moles	http://www.molesbrewery.com/
Moles Brewery	http://www.molesbrewery.com
Moonstone Brewery	http://www.moonstonebrewery.co.uk
Moor Beer	http://www.moorbeer.co.uk/
Moor Beer Company	http://www.moorbeer.co.uk
Moorcock	http://www.moorcockbrewing.co.uk/
Moorhouse's Brewery (Burnley) Ltd	http://www.moorhouses.co.uk
Mordue Brewery	http://www.morduebrewery.com
Moulin Hotel & Brewery	http://www.moulinhotel.co.uk
Munslow Brewhouse	http://www.crowncountrytinn.co.uk
Museum Brewing Company	http://www.worthingtons-whiteshield.com