| Our Roots Inner City Lives | £11k | FY2024 | |
| OUR SECOND HOME | £493k | FY2025 | |
| OUR SOCIETY UNITED KINGDOM | £59k | FY2025 | |
| OUR SPACE (STAFFS) LTD | £158k | FY2025 | |
| OUR TIME | £253k | FY2025 | |
| OUR UMMAH TRUST | £34k | FY2025 | |
| OURBRAINBANK | £28k | FY2024 | |
| OURJAY FOUNDATION | £261k | FY2024 | |
| Ousa Limited | £594k | FY2025 | going concern trustee payments |
| THE OUSELEY CHURCH MUSIC TRUST | £199k | FY2025 | |
| OUT & PROUD AFRICAN LGBTI | £152k | FY2025 | reserves below policy |
| Out North East | £172k | FY2024 | |
| OUT OF AFRICA | £92k | FY2024 | reserves below policy |
| OUT OF CHARACTER | £40k | FY2025 | |
| OUT OF CLASS | £68k | FY2025 | |
| OUT OF SIGHT | £115k | FY2025 | |
| OUT THERE SUPPORTING FAMILIES OF PRISONERS LIMITED | £256k | FY2025 | reserves below policy |
| OUT TO SWIM | £366k | FY2024 | reserves below policy |
| Out Together | £83k | FY2024 | |
| THE OUTCRY ENSEMBLE | £106k | FY2024 | |
| THE OUTDOOR COLLABORATIVE | £97k | FY2026 | |
| Outdoor Mobility | £151k | FY2025 | |
| OUTHWAITE CHARITABLE TRUST | £138k | FY2025 | |
| THE OUTLOOK FOUNDATION | £1.8m | FY2025 | reserves below policy |
| THE OUTLOOK TRUST FOR THE VISUALLY IMPAIRED | £47k | FY2024 | |
| OUTPOST CHURCH | £66k | FY2025 | |
| OUTREACH 3 WAY | £7.6m | FY2025 | |
| OUTREACH COMMUNITY AND RESIDENTIAL SERVICES | £2.8m | FY2025 | reserves below policy |
| Outreach EMR | £116k | FY2025 | |
| OUTREACH INTERNATIONAL HEALING MINISTRIES | £52k | FY2025 | |
| OUTREACH YOUTH | £163k | FY2025 | |
| THE OUTRUNNERS CHARITY | £359k | FY2025 | |
| OUTSET - CONTEMPORARY ART FUND | £490k | FY2023 | reserves below policy |
| OUTSIDE EDGE THEATRE COMPANY | £268k | FY2025 | |
| OUTSIDE IN ART | £572k | FY2025 | reserves below policy |
| OUTSIDE-IN CUMBRIA | £211k | FY2025 | going concern |
| THE OUTWARD BOUND TRUST | £17.3m | FY2025 | |
| OUTWARD HOUSING | £21.4m | FY2025 | |
| OUTWOOD MEMORIAL HALL AND COMMUNITY CENTRE | £70k | FY2025 | |
| THE OVAL CRICKET RELIEF TRUST | £104k | FY2024 | |
| OVAL LEARNING CLUSTER | £258k | FY2024 | |
| OVARIAN CANCER ACTION | £1.6m | FY2025 | |
| THE OVE ARUP FOUNDATION | £319k | FY2025 | |
| OVE ARUP PARTNERSHIP CHARITABLE TRUST | £719k | FY2025 | |
| OVER COMMUNITY ASSOCIATION | £89k | FY2025 | |
| THE OVER DAY CENTRE ASSOCIATION | £170k | FY2025 | |
| OVER KELLET PLAYGROUP | £144k | FY2025 | |
| OVER PUDDLEDUCKS PRE-SCHOOL | £122k | FY2025 | |
| OVER THE WALL CAMP | £2.6m | FY2024 | |
| OVERCOME | £295k | FY2025 | |
| OVERCOMERS FAMILY CHURCH INTERNATIONAL | £58k | FY2024 | |
| OVERCOMING MULTIPLE SCLEROSIS | £1.2m | FY2025 | |
| OVEREATERS ANONYMOUS GREAT BRITAIN [OAGB] | £41k | FY2025 | |
| Overflow Church | £41k | FY2025 | |
| OVERGATE HOSPICE | £9.8m | FY2025 | reserves below policy |
| OVERSEAL PRE-SCHOOL PLAYGROUP | £63k | FY2025 | reserves below policy |
| OVERSEAS AID FOR THE KIDS OF SIERRA LEONE (OAKS) | £117k | FY2024 | |
| THE OVERSEAS BISHOPRICS' FUND | £514k | FY2024 | |
| OVERSEAS CHINESE ASSOCIATION (SOUTH WEST REGION) | £74k | FY2025 | |
| OVERSEAS FELLOWSHIP OF NIGERIAN CHRISTIANS | £390k | FY2023 | |
| OVERSEAS PLASTIC SURGERY APPEAL | £36k | FY2024 | |
| THE OVERSEAS SERVICE PENSIONERS BENEVOLENT SOCIETY | £39k | FY2024 | |
| THE OVERSEAS WELFARE SOCIETY UK | £39k | FY2025 | |
| THE OVERSTALL CHARITABLE TRUST | £35k | FY2025 | |
| OVERTON PLAYCENTRE | £213k | FY2025 | |
| OVERTON PLAYGROUP | £285k | FY2025 | |
| OVERTON RECREATION CENTRE | £159k | FY2024 | |
| OVERTON SCHOOL ASSOCIATION | £27k | FY2025 | |
| OVERTON VILLAGE HALL | £35k | FY2025 | |
| OVINGDEAN HALL FOUNDATION | £774k | FY2025 | |
| OVINGDEAN VILLAGE HALL | £27k | FY2025 | |
| OVINGHAM AND DISTRICT UNDER 5'S | £67k | FY2025 | |
| OVINGHAM VILLAGE HALL | £26k | FY2025 | |
| OVO | £689k | FY2025 | reserves below policy |
| THE OVO CHARITABLE FOUNDATION | £1.2m | FY2023 | |
| THE OWEN JENKINS TRUST | £122k | FY2025 | |
| OWEN MCVEIGH FOUNDATION | £426k | FY2025 | |
| THE OWEN OWEN TRUST FUND | £85k | FY2025 | |
| THE OWEN SMITH CHARITABLE TRUST | £240k | FY2024 | |
| THE OWEN'S SCHOOL ASSOCIATION | £76k | FY2025 | |
| OWERMOIGNE VILLAGE HALL | £34k | FY2025 | |
| OWLERTON WESLEYAN REFORM CHURCH | £36k | FY2024 | |
| OWLSMOOR PARENT TEACHER ASSOCIATION | £79k | FY2025 | |
| OXENHOPE COMMUNITY ASSOCIATION | £26k | FY2025 | |
| OXENHOPE UNDER FIVES | £139k | FY2025 | |
| OXFAM | £339.4m | FY2025 | |
| OXFORD AMATEUR ROWING CLUB | £60k | FY2025 | |
| THE OXFORD AND CAMBRIDGE ROWING FOUNDATION | £332k | FY2025 | |
| OXFORD AND SWINDON AREA QUAKER MEETING OF THE RELIGIOUS SOCIETY OF FRIENDS (QUAKERS) IN BRITAIN | £370k | FY2025 | |
| OXFORD ARCHAEOLOGY LIMITED | £27.6m | FY2025 | |
| OXFORD BACH SOLOISTS | £188k | FY2025 | |
| OXFORD BIBLE CHURCH TRUST LIMITED | £331k | FY2024 | trustee payments |
| THE OXFORD BIBLIOGRAPHICAL SOCIETY | £28k | FY2024 | |
| OXFORD BREAST BUDDY GROUP | £74k | FY2024 | |
| OXFORD BROOKES STUDENTS UNION LTD | £1.6m | FY2025 | trustee payments |
| OXFORD BUDDHA VIHARA | £185k | FY2025 | |
| THE OXFORD BUS MUSEUM TRUST LIMITED | £95k | FY2024 | |
| THE OXFORD CENTRE FOR ISLAMIC STUDIES | £6.0m | FY2025 | reserves below policy |
| THE OXFORD CENTRE FOR BUDDHIST STUDIES | £60k | FY2025 | |
| OXFORD CENTRE FOR EDUCATION AND RESEARCH IN PALLIATIVE CARE: SOBELL HOUSE | £399k | FY2024 | |
| THE OXFORD CENTRE FOR HINDU STUDIES | £1.1m | FY2025 | going concern |
| THE OXFORD CENTRE FOR MISSION STUDIES | £1.4m | FY2024 | |
| OXFORD CENTRE FOR RELIGION AND PUBLIC LIFE | £413k | FY2024 | reserves below policy |
| OXFORD CHAMBER MUSIC FOUNDATION LIMITED | £83k | FY2025 | |
| THE OXFORD CHINESE CHRISTIAN CHURCH | £186k | FY2024 | |
| OXFORD COMMUNITY WORK AGENCY LIMITED | £266k | FY2025 | |
| THE OXFORD DIOCESAN BELL FUND | £59k | FY2025 | |
| OXFORD DIOCESAN BOARD OF EDUCATION | £7.2m | FY2024 | trustee payments |
| THE OXFORD DIOCESAN BOARD OF FINANCE | £28.0m | FY2024 | |
| OXFORD DIOCESAN COUNCIL FOR SOCIAL WORK INCORPORATED | £5.4m | FY2025 | |
| THE OXFORD DIOCESAN COUNCIL FOR THE DEAF AND HARD OF HEARING | £106k | FY2025 | |
| OXFORD ECONOMIC PAPERS ASSOCIATION | £217k | FY2025 | |
| OXFORD ETHNOGRAPHY AND EDUCATION CONFERENCE | £31k | FY2025 | going concern |
| OXFORD EVANGELICAL PRESBYTERIAN CHURCH | £4.5m | FY2024 | |
| THE OXFORD FARMING CONFERENCE | £476k | FY2023 | |
| OXFORD FILM AND VIDEO MAKERS LIMITED | £148k | FY2025 | trustee payments |
| OXFORD GEMS NURSERY LIMITED | £121k | FY2025 | |
| THE OXFORD GOOD STEWARDS TRUST | £907k | FY2025 | reserves below policy |
| THE OXFORD GROUP | £375k | FY2024 | trustee payments |
| OXFORD HARMONIC CHOIR | £47k | FY2025 | |
| OXFORD HEALTH CHARITY | £236k | FY2025 | |
| OXFORD HINDU TEMPLE AND COMMUNITY CENTRE PROJECT | £89k | FY2025 | |
| OXFORD HOSPITALS CHARITY | £6.5m | FY2024 | |
| THE OXFORD HOUSE IN BETHNAL GREEN | £622k | FY2025 | reserves below policy |
| OXFORD HUB | £452k | FY2025 | |
| OXFORD INSTITUTE FOR ENERGY STUDIES | £3.3m | FY2025 | |
| OXFORD ISLAMIC SOCIETY | £61k | FY2024 | |
| THE OXFORD KIDNEY UNIT TRUST FUND LIMITED | £121k | FY2025 | |
| OXFORD KILBURN YOUTH TRUST | £149k | FY2026 | reserves below policy |
| OXFORD KOREAN CHURCH | £65k | FY2025 | |
| OXFORD LANE ALMSHOUSES CHARITY | £36k | FY2025 | |
| OXFORD LIEDER | £742k | FY2024 | going concern |
| OXFORD LITERARY AND DEBATING UNION CHARITABLE TRUST | £216k | FY2023 | |
| THE OXFORD LITERARY FESTIVAL | £849k | FY2025 | reserves below policy |
| THE OXFORD MINDFULNESS FOUNDATION | £1.3m | FY2025 | |
| OXFORD MOSQUE SOCIETY | £37k | FY2025 | |
| OXFORD OPERA TRUST CIO | £104k | FY2025 | |
| OXFORD OPERATIC SOCIETY | £137k | FY2025 | going concern |
| OXFORD ORATORY OF ST PHILIP NERI | £697k | FY2024 | |
| OXFORD PARENT-INFANT PROJECT | £632k | FY2025 | |
| OXFORD PHILHARMONIC ORCHESTRA TRUST | £3.1m | FY2025 | |
| THE OXFORD PLAYHOUSE TRUST | £5.3m | FY2025 | |
| OXFORD POVERTY ACTION | £42k | FY2024 | |
| OXFORD PRIDE GROUP LTD | £97k | FY2025 | |
| OXFORD PROCESS CIO | £75k | FY2024 | |
| OXFORD ROAD EDUCATIONAL CHARITY | £32k | FY2024 | |
| OXFORD ROUND TABLE CHARITABLE TRUST | £173k | FY2025 | |
| OXFORD SAMARITANS | £98k | FY2025 | |
| THE OXFORD SAMUEL BECKETT THEATRE CHARITABLE TRUST | £42k | FY2024 | |
| THE OXFORD SCHOOL OF DRAMA TRUST | £1.7m | FY2025 | trustee payments |
| OXFORD SEA CADETS T.S. EURYALUS | £72k | FY2025 | |
| OXFORD SPIRES SCOUT DISTRICT | £30k | FY2025 | |
| OXFORD SPORTS COUNCIL | £57k | FY2024 | |
| OXFORD SYMPHONY ORCHESTRA | £43k | FY2025 | |
| THE OXFORD SYMPOSIUM ON FOOD AND COOKERY | £124k | FY2025 | |
| THE OXFORD SYNAGOGUE AND JEWISH CENTRE LIMITED | £255k | FY2025 | |
| OXFORD TRANSPLANT FOUNDATION | £181k | FY2025 | |
| THE OXFORD TRUST | £3.9m | FY2024 | |
| OXFORD UNIVERSITY BOAT CLUB TRUST CIO | £46k | FY2024 | |
| OXFORD UNIVERSITY STUDENT UNION | £1.1m | FY2025 | trustee payments |
| THE OXFORD WELSH MALE VOICE CHOIR | £41k | FY2025 | |
| OXFORD WOOD RECYCLING LTD | £757k | FY2024 | trustee payments |
| OXFORD YOUTH CHOIRS | £35k | FY2025 | |
| OXFORD YOUTH ENTERPRISE LIMITED | £43k | FY2025 | |
| OXFORDSHIRE ANIMAL SANCTUARY SOCIETY | £1.8m | FY2025 | |
| OXFORDSHIRE ARCHITECTURAL AND HISTORICAL SOCIETY | £57k | FY2025 | |
| THE OXFORDSHIRE BRANCH OF THE CAMPAIGN TO PROTECT RURAL ENGLAND | £371k | FY2024 | |
| OXFORDSHIRE BREASTFEEDING SUPPORT | £64k | FY2025 | |
| THE OXFORDSHIRE CARE PARTNERSHIP | £29.6m | FY2025 | |
| OXFORDSHIRE COMMUNITY AND VOLUNTARY ACTION | £1.7m | FY2025 | |
| OXFORDSHIRE COMMUNITY CHURCHES | £5.0m | FY2025 | reserves below policy |
| OXFORDSHIRE COMMUNITY FOUNDATION | £2.1m | FY2024 | |
| OXFORDSHIRE CROSSROADS | £2.1m | FY2025 | reserves below policy qualified opinion |
| OXFORDSHIRE DEAF CHILDREN'S SOCIETY | £19k | FY2025 | |
| OXFORDSHIRE DISCOVERY COLLEGE | £52k | FY2025 | |
| OXFORDSHIRE HISTORIC CHURCHES TRUST (2016) | £402k | FY2024 | |
| OXFORDSHIRE HOMELESS MOVEMENT | £371k | FY2025 | |
| OXFORDSHIRE LAWN TENNIS ASSOCIATION | £131k | FY2025 | |
| OXFORDSHIRE MASONIC CHARITY | £88k | FY2025 | |
| OXFORDSHIRE MIND | £7.0m | FY2025 | |
| OXFORDSHIRE MOTOR PROJECT | £1.3m | FY2025 | |
| OXFORDSHIRE PLAY ASSOCIATION | £170k | FY2025 | |
| OXFORDSHIRE WILDLIFE RESCUE | £269k | FY2025 | |
| OXFORDSHIRE YOUTH | £2.4m | FY2025 | |
| Oxhaven Trust | £183k | FY2025 | |
| OXHILL YOUTH CENTRE | £70k | FY2025 | |
| OXLEAS NHS FOUNDATION TRUST CHARITABLE FUND | £216k | FY2025 | |
| OXMARKET CENTRE OF ARTS LIMITED | £119k | FY2025 | reserves below policy |
| OXSHOTT ROYALS FOOTBALL CLUB | £161k | FY2025 | going concern |
| OXSRAD | £195k | FY2025 | |
| OXTED OPERATIC SOCIETY | £49k | FY2025 | |
| OXTED PRE-SCHOOL PLAYGROUP | £98k | FY2025 | |
| THE OXTON SOCIETY | £54k | FY2025 | |
| OXTON VILLAGE HALL | £27k | FY2025 | |
| OXYGEN | £285k | FY2025 | |
| OXYGEN & WELLNESS THERAPY CENTRE | £82k | FY2025 | trustee payments |
| Oxygen - Kingston Youth | £38k | FY2025 | |
| OXYGEN THERAPY CENTRE CARDIGAN LTD | £39k | FY2025 | |
| OY FOUNDATION | £114k | FY2024 | |
| OYA ORGANISATION OF YOUNG AFRICANS | £143k | FY2025 | reserves below policy |
| OYY LUBAVITCH BOYS SCHOOL | £383k | FY2025 | going concern |
| OZAR LENETZROCHIM LIMITED | £431k | FY2025 | |
| OZER UMAGEN | £36k | FY2025 | |