- Lee's Chinese Take Away4Takeaway/sandwich shopGwyneddLL55 1NP
- Leisure Hub5Restaurant/Cafe/CanteenGwyneddLL55 4RF
- Lizzy’s5Restaurant/Cafe/CanteenGwyneddLL55 1RF
- Llanberis & District Social Club5Pub/bar/nightclubGwyneddLL55 4EY
- Llanberis Retreats5Hotel/bed & breakfast/guest houseGwyneddLL55 4TF
- Llanberis Takeaway5Takeaway/sandwich shopGwyneddLL55 4EU
- Llanberis Tandoori3Takeaway/sandwich shopGwyneddLL55 4EU
- Llanberis Touring Park5Retailers - otherGwyneddLL55 4EL
- Llygad Yr Haul5Restaurant/Cafe/CanteenGwyneddLL55 4SU
- Lodge Dinorwig5Hotel/bed & breakfast/guest houseGwyneddLL55 3EY
- London Garage Service Station5Retailers - otherGwyneddLL55 4DE
- Lone Tree Cafe5Restaurant/Cafe/CanteenGwyneddLL55 4EL
- Lucky Fish Bar5Takeaway/sandwich shopGwyneddLL55 1AB
- MW Drinks5Manufacturers/packersGwyneddLL55
- Malcolm Siop Twthill5Retailers - otherGwyneddLL55 1PN
- ManonExemptRetailers - otherGwyneddLL55 1RR
- Marbryn5Hospitals/Childcare/Caring PremisesGwyneddLL55 1BA
- Mary Morris Home Hosting5Other catering premisesGwyneddLL55
- Mcdonald'S Restaurants Limited5Restaurant/Cafe/CanteenGwyneddLL55 2HS
- Meithrinfa Babinogion Day Nursery Ltd5Hospitals/Childcare/Caring PremisesGwyneddLL55 2HH
- Melysion Enfys5Manufacturers/packersGwyneddLL55
- Menter Cymunedol Bethel5Restaurant/Cafe/CanteenGwyneddLL55 1AX
- Menter Fachwen5Restaurant/Cafe/CanteenGwyneddLL55 4DT
- Michael Heard Hughes5Retailers - otherGwyneddLL55 2AF
- Morfarch Cafe Bar & Restaurant5Restaurant/Cafe/CanteenGwyneddLL55 1TH
- Morrisons Daily Caernarfon5Retailers - otherGwyneddLL55 1BE
- Nant Y Mynydd Water CoolersExemptDistributors/TransportersGwyneddLL55 1UL
- Nemo5Restaurant/Cafe/CanteenGwyneddLL55 2NF
- Neuadd y Farchnad - Market Hall4Pub/bar/nightclubGwyneddLL55 1RR
- Newborough Arms5Pub/bar/nightclubGwyneddLL55 2UG
- One Stop4Retailers - otherGwyneddLL55 4SU
- Osteria5Restaurant/Cafe/CanteenGwyneddLL55 1RF
- Ouzo And Olive5Restaurant/Cafe/CanteenGwyneddLL55 1RF
- Owen Glyn Owen & Son5Manufacturers/packersGwyneddLL55 1AT
- Padarn Hotel5Hotel/bed & breakfast/guest houseGwyneddLL55 4SU
- Padarn Pottery5Retailers - otherGwyneddLL55 4TY
- Palace Cebab5Restaurant/Cafe/CanteenGwyneddLL55 1RR
- Palace Vaults5Pub/bar/nightclubGwyneddLL55 1RR
- Palas Print5Retailers - otherGwyneddLL55 1RR
- Panda Babo Bar5Takeaway/sandwich shopGwyneddLL55 4TA
- Pantri5Restaurant/Cafe/CanteenGwyneddLL55 4SU
- Paula Morris Jones5Other catering premisesGwyneddLL55
- Peak Restaurant5Restaurant/Cafe/CanteenGwyneddLL55 4SU
- Pen Y Gwryd Hotel5Hotel/bed & breakfast/guest houseGwyneddLL55 4NT
- Pen Y Pass Cafe5Restaurant/Cafe/CanteenGwyneddLL55 4NY
- Pen Y Pass Youth Hostel5Hotel/bed & breakfast/guest houseGwyneddLL55 4NY
- Penceunant Isaf5Restaurant/Cafe/CanteenGwyneddLL55 4UW
- Pendine Park Care Organisation Ltd5Hospitals/Childcare/Caring PremisesGwyneddLL55 2YU
- Penningtons Packaging LtdExemptRetailers - otherGwyneddLL55 2BD
- Penrallt Youth CentreExemptOther catering premisesGwyneddLL55 1NS