Services for O
- Orwell Art Club, Ipswich
- Orwell Astronomical Society, Ipswich
- Orwell Connection Choir
- Orwell Decorative and Fine Arts Society
- Orwell Dog Walking
- Orwell Housing Association Ltd
- Orwell Lady
- Orwell Panthers
- Orwell Quiz Society
- The Orwell Singers
- Orwell Yacht Club, Ipswich
- Osteopath, Woodbridge
- OT Bathrooms LTD
- Otago Strength and Balance classes
- The Otium Centre
- Otley Hall
- Otley Parish Council
- Otley Play Area
- Otley Primary School
- Otley Under Fives Centre
- Oulton Broad Art Circle
- Oulton Broad Assembly
- Oulton Broad Bowls Club
- Oulton Broad Dayboat Hire
- Oulton Broad Ladies' Evening Club
- Oulton Broad Library Rooms for Hire
- Oulton Broad Parish Council
- Oulton Broad Primary School
- Oulton Broad Private Chiropody Practice
- Oulton Community Centre
- Oulton Community Church
- Oulton Ladies' Group
- Oulton Parish Council
- Oulton Park Care Centre
- Our Lady & St John the Evangelist Catholic Church, Sudbury
- Our Lady and St Peter Catholic Church, Aldeburgh
- Our Lady Immaculate and St Etheldreda Roman Catholic Church
- Our Lady Immaculate and St Philip Neri Roman Catholic Church
- Our Lady Star of the Sea Roman Catholic Church, Lowestoft
- Our Special Friends
- Ousden Parish Council
- Ousden Village Hall
- Out and About Private Hire And Companion Service
- The Outdoor Swimming Society
- Outney Meadow Caravan Park
- Outreach youth
- The Outside Clinic
- Outside the Wire
- Over 55's Club, Elmswell
- Over The Wall - Residential Disabled children's holiday camps.
- Oxford Home Study Centre
- Oxlip House