- My Tyres
- Mobile Shop
- Majestic Online
- Maplin Electronics
- Moss Bros
- MyTheresa
- Milk&More
- Musto
- Moda in Pelle
- Monica Vinader
- Macdonald Hotels
- Mankind
- Mobiles.co.uk
- Marriott
- Marks and Spencer - M&S
- Millets
- MandMDirect
- Machine Mart
- Madame Tussauds
- Millet Sports
- M&Co
- McDonalds
- Marisota
- Miss Selfridge
- Motel Rocks
- Matalan
- MOO
- Myprotein
- Monsoon
- Me&Em
- More Than Pet Insurance
- Molton Brown
- McLaren Store
- Merlin Cycles
- Monster Supplements
- Missguided
- Modern Rugs
- Made.com
- My 1st Years
- My Nametags
- Mahabis
- Maxwells DIY
- Minerva Crafts
- Miss Pap
- Mio Skincare
- Moss Bros Hire
- My Geek Box
- Missy Empire
- Maverick & Wolf
- Mow Direct
- Mainline Menswear
- Ministry of Sound
- Mama Mio
- Marks Electrical
- Mean and Green
- Matches Fashion
- Mr & Mrs Smith
- Mfortune
- Myphotobook
- MySupermarket
- Mobile Fun
- My Single Friend
- Me to You Online
- Megabus / Megabus.com
- Muji
- Musthave.co.uk
- Mobile Phones Direct
- M&P Direct
- MyStrollers.com
- Minisport.com
- Move Dancewear
- MMOGA UK
- Marine Super Store
- Mail Sports
- Maxwell Scott
- Muscle Finesse
- MyPure
- MedicAnimal
- Modalu
- Millys Store