- Great Western Hotel5Pub/bar/nightclubMerthyr TydfilCF46 5NR
- Greenfield Special School5School/college/universityMerthyr TydfilCF48 4BJ
- Greenhill Manor Care Home5Hospitals/Childcare/Caring PremisesMerthyr TydfilCF48 4BE
- Greggs5Retailers - otherMerthyr TydfilCF48 4TQ
- Greggs5Takeaway/sandwich shopMerthyr TydfilCF48 2SR
- Greggs5Retailers - otherMerthyr TydfilCF47 8DF
- Greggs5Retailers - otherMerthyr TydfilCF47 9SB
- Greggs Cafe & Bakery5Retailers - otherMerthyr TydfilCF47 8EL
- Greggs PLC5Takeaway/sandwich shopMerthyr TydfilCF48 1HY
- Guest Memorial Social & Bowls Club5Pub/bar/nightclubMerthyr TydfilCF48 3HA
- Gurnos Fish Bar5Takeaway/sandwich shopMerthyr TydfilCF47 9SB
- Gurnos Kebab house3Takeaway/sandwich shopMerthyr TydfilCF47 9SB
- Gurnos Sports Club Limited3Pub/bar/nightclubMerthyr TydfilCF47 9SF
- Gwaunfarren School5School/college/universityMerthyr TydfilCF47 9AF
- Hafan Saff Cyf5Hospitals/Childcare/Caring PremisesMerthyr TydfilCF48
- Han Sing4Takeaway/sandwich shopMerthyr TydfilCF48 3LT
- Happy Bees Day NurseryAwaitingHospitals/Childcare/Caring PremisesMerthyr TydfilCF46
- Harry's Plaice4Takeaway/sandwich shopMerthyr TydfilCF48 3SH
- Harvester4Restaurant/Cafe/CanteenMerthyr TydfilCF48 1UT
- Haystack Cafe4Restaurant/Cafe/CanteenMerthyr TydfilCF47 8DE
- Heddfan Residential Home3Hospitals/Childcare/Caring PremisesMerthyr TydfilCF48 1TD
- Hello Good Pie Ltd5Mobile catererMerthyr TydfilCF46
- Hendersons Newsagents5Retailers - otherMerthyr TydfilCF48 3RW
- Heolgerrig Community School5School/college/universityMerthyr TydfilCF48 1SB
- Heolgerrig Out of School Club5Hospitals/Childcare/Caring PremisesMerthyr TydfilCF48 1SB
- Heolgerrig Post Office5Retailers - otherMerthyr TydfilCF48 1RP
- Heolgerrig Social Club5Pub/bar/nightclubMerthyr TydfilCF48 1RP
- Here We Grow Day Nursery5Hospitals/Childcare/Caring PremisesMerthyr TydfilCF48 1AR
- Heron Foods5Retailers - otherMerthyr TydfilCF47 8DE
- High Street Baptist Church4Restaurant/Cafe/CanteenMerthyr TydfilCF47 8DN
- High Street Ice Cream Parlour5Takeaway/sandwich shopMerthyr TydfilCF47 8DE
- Hills Plymouth Cricket Club4Pub/bar/nightclubMerthyr TydfilCF48 4BJ
- Ho Wah3Takeaway/sandwich shopMerthyr TydfilCF48 3HB
- Holland & Barrett5Retailers - otherMerthyr TydfilCF47 8EG
- Home Bargains5Retailers - supermarkets/hypermarketsMerthyr TydfilCF48 4TQ
- Hong Shan Takeaway5Takeaway/sandwich shopMerthyr TydfilCF47 0LJ
- Hope & Market Square United ChurchExemptOther catering premisesMerthyr Tydfil
- Hope Church5Hospitals/Childcare/Caring PremisesMerthyr TydfilCF47 8UG
- Horizn Fitness5Restaurant/Cafe/CanteenMerthyr TydfilCF48 2SR
- Horse & Groom Inn5Pub/bar/nightclubMerthyr TydfilCF47 9HH
- Hot Wok Take A Way3Takeaway/sandwich shopMerthyr TydfilCF46 5HE
- Household Stores4Retailers - otherMerthyr TydfilCF47 0LU
- I Do Love A Wedding5Other catering premisesMerthyr Tydfil
- Iceland5Retailers - supermarkets/hypermarketsMerthyr TydfilCF48 4TQ
- Iceland Food WarehouseAwaitingRetailers - supermarkets/hypermarketsMerthyr Tydfil
- Iceland Frozen Foods4Retailers - supermarkets/hypermarketsMerthyr TydfilCF47 8EG
- Iscream Shop3Restaurant/Cafe/CanteenMerthyr Tydfil
- Jacks Kebabs3Takeaway/sandwich shopMerthyr TydfilCF47 8UG
- Jah-Jireh Care Home3Hospitals/Childcare/Caring PremisesMerthyr Tydfil
- Jamieson's juice factory LTD5Restaurant/Cafe/CanteenMerthyr TydfilCF47