M and M Direct 
M&Co. 
MacSpeech 
MacWarehouse 
Macdonald Hotels 
Machine Mart 
Madasafish 
Magazine Group 
Mainline Menswear 
Majestic Wine 
Mankind 
Maplin 
Marie-Chantal 
Marisota 
Marks and Spencer 
Marriott 
Marshall Ward 
Match.com 
Maxavita 
Maximuscle 
Maxitone 
Mazuma Mobile 
McAfee 
The Menswear Site 
Metaboli UK 
Microsoft Store 
Microwarehouse 
Milan Clothing 
Millet Sports 
Millets 
Ministry of Sound 
Minxy Bingo 
Misco 
Miss Selfridge 
Misspenny 
Mobiles.co.uk 
Mobiles2YourDoor 
Mobileshop 
Moneybookers 
Moo.com 
Moon Bingo 
Moss Bros 
Mothercare 
Motorcycle Parts and Accessories 
Museum Selection 
Musicroom.com 
My-Wardrobe.com 
MyMemory 
MyOffers 
Myakka 
mobile fun 
myTuxedo 
myphotobook.co.uk 
myprinting 
mytyres.co.uk 