| THE OGDEN TRUST | £1.2m | FY2025 | |
| THE OGILVIE CHARITIES | £1.3m | FY2023 | |
| THE OGLE CHRISTIAN TRUST | £67k | FY2024 | trustee payments |
| OGLESBY CHARITABLE TRUST | £1.0m | FY2025 | |
| OGMORE BY SEA CHURCH | £66k | FY2025 | |
| THE OGMORE-BY-SEA VILLAGE HALL ASSOCIATION | £69k | FY2025 | |
| OGWELL PRE - SCHOOL | £72k | FY2024 | |
| OGWEN VALLEY MOUNTAIN RESCUE CIO | £204k | FY2025 | |
| OHANA ANIMAL CHARITY | £116k | FY2025 | |
| OHAVEI TORASECHA | £119k | FY2025 | |
| OHEL DAVID (LI) | £28k | FY2024 | |
| OHEL DAVID EASTERN SYNAGOGUE | £332k | FY2024 | |
| OHEL SHOLOM | £149k | FY2025 | |
| OHEL TORAH | £401k | FY2025 | |
| OHEL TORAH YOUTH ORGANISATION | £475k | FY2025 | |
| OHEL ZADIKIM LTD | £34k | FY2025 | reserves below policy |
| THE OHMI TRUST | £229k | FY2025 | |
| OHOLEI YOSEF YITZCHOK LUBAVITCH SCHOOLS | £294k | FY2025 | |
| OHP Trust | £117k | FY2025 | |
| OHR CHAIM LIMITED | £37k | FY2025 | |
| OHR EMES LTD | £2.4m | FY2025 | |
| OHR TORAH LTD | £243k | FY2025 | |
| OHR YERUSHALAYIM SYNAGOGUE | £143k | FY2025 | |
| OHR YISROEL | £27k | FY2025 | |
| The OIKOS Collective | £381k | FY2025 | trustee payments |
| OIKOS- BRIGG | £63k | FY2025 | |
| OIL AND COLOUR CHEMISTS' ASSOCIATION | £223k | FY2024 | |
| THE OILY CART COMPANY | £579k | FY2025 | |
| OINOUSSAI BENEVOLENT FUND | £178k | FY2025 | |
| OIRAYSA LIMITED | £103k | FY2025 | |
| THE OITIJ-JO COLLECTIVE | £154k | FY2024 | |
| OIZER CHARITABLE TRUST | £955k | FY2025 | |
| OIZER DALIM TRUST | £122k | FY2025 | |
| OJAALA WELFARE FOUNDATION | £39k | FY2025 | |
| THE OK FOUNDATION | £98k | FY2024 | |
| THE OKAPI FUND FOR NATURE CONSERVATION IN THE DEMOCRATIC REPUBLIC OF CONGO | £1.2m | FY2024 | |
| OKEHAMPTON AND DISTRICT AGRICULTURAL ASSOCIATION | £256k | FY2025 | |
| OKEHAMPTON COMMUNITY AND RECREATION ASSOCIATION | £405k | FY2025 | reserves below policy |
| OKEHAMPTON DISTRICT COMMUNITY TRANSPORT GROUP | £100k | FY2025 | |
| THE OKEHAMPTON FOODBANK | £59k | FY2025 | |
| OKEHAMPTON FOUNDATION | £818k | FY2025 | |
| OKRE: OPENING KNOWLEDGE ACROSS RESEARCH AND ENTERTAINMENT | £999k | FY2025 | reserves below policy trustee payments |
| OKS EDUCATIONAL AND BENEVOLENT TRUST | £26k | FY2025 | |
| OKUSINZA MU LUGANDA | £33k | FY2025 | |
| OL PEJETA CONSERVANCY UK | £1.3m | FY2025 | qualified opinion |
| OLAM CHESED YIBONEH | £397k | FY2024 | |
| OLAYINKA ADERINKOLA AKINRINOLA FOUNDATION UK | £28k | FY2025 | reserves below policy going concern |
| THE OLD ALBANIAN SPORTS ASSOCIATION LIMITED | £1.1m | FY2025 | reserves below policy going concern |
| THE OLD APOSTOLIC CHURCH (ENGLAND) | £262k | FY2025 | |
| THE OLD BANK WELLBEING TRUST | £320k | FY2025 | |
| THE OLD BANK, CAMELFORD | £189k | FY2025 | |
| OLD BAPTIST UNION | £27k | FY2025 | |
| OLD BASING SCOUTS | £30k | FY2024 | |
| OLD BASING VILLAGE HALL | £80k | FY2025 | |
| OLD BATH HOUSE AND COMMUNITY CENTRE WOLVERTON | £82k | FY2025 | |
| OLD BEDIANS SPORTS CENTRE | £54k | FY2025 | going concern |
| OLD BEN HOMES LIMITED | £758k | FY2025 | |
| OLD BEXLEY C OF E PRIMARY SCHOOL PTA | £48k | FY2025 | |
| OLD BOAT CORNER COMMUNITY ASSOCIATION LIMITED | £368k | FY2024 | |
| THE OLD BROAD STREET CHARITY TRUST | £47k | FY2025 | |
| OLD BUCKENHAM HALL (BRETTENHAM) EDUCATIONAL TRUST LTD | £4.2m | FY2024 | going concern |
| OLD BURIAL GROUND ESTATE | £91k | FY2025 | |
| OLD CALENDAR ORTHODOX CHURCH OF ANNUNCIATION | £73k | FY2025 | |
| OLD CATTON PRE-SCHOOL | £168k | FY2025 | |
| OLD CENTRALIANS TRUST | £152k | FY2025 | |
| THE OLD CHURCH, STOKE NEWINGTON | £118k | FY2025 | going concern |
| OLD COLSTONIAN CHARITABLE TRUST | £56k | FY2025 | |
| OLD COULSDON CENTRE | £117k | FY2025 | |
| OLD COURT COMMUNITY PRE-SCHOOL | £184k | FY2025 | |
| OLD COVENTRIANS RUGBY FOOTBALL CLUB | £183k | FY2025 | |
| THE OLD DALBY PRE-SCHOOL PLAYGROUP | £172k | FY2025 | |
| THE OLD DART FOUNDATION | £2.7m | FY2024 | |
| OLD DOVORIAN TRUST | £27k | FY2026 | |
| OLD EDWARDIANS' ASSOCIATION UK & IRELAND BRANCH | £46k | FY2024 | |
| THE OLD ELTHAMIANS' CHARITABLE TRUST | £82k | FY2025 | |
| THE OLD ENFIELD CHARITABLE TRUST | £685k | FY2025 | |
| OLD EPSOMIAN CLUB 1952 TRUST FUND | £89k | FY2025 | |
| OLD ETONIAN TRUST(THE) | £422k | FY2025 | |
| OLD FELIXSTOWE COMMUNITY ASSOCIATION (OFCA) | £65k | FY2025 | |
| OLD FELIXSTOWE NURSERY | £186k | FY2025 | |
| OLD FIRE STATION STOKE NEWINGTON CIO | £135k | FY2025 | |
| OLD HALL PEOPLES PARTNERSHIP | £388k | FY2025 | |
| OLD HASTINGS PRESERVATION SOCIETY LIMITED | £49k | FY2025 | |
| Old Headington Village Hall | £49k | FY2024 | |
| OLD HEATH COMMUNITY CENTRE | £26k | FY2025 | |
| THE OLD HEATHCOAT SCHOOL COMMUNITY CENTRE (KING STREET TIVERTON) LIMITED | £144k | FY2025 | |
| THE OLD HEREFORDIAN FUND CIO | £226k | FY2024 | |
| OLD HUNSTANTON VILLAGE HALL CIO | £52k | FY2025 | |
| OLD KILN MUSEUM CIO | £500k | FY2025 | |
| OLD LEAKE COMMUNITY CENTRE AND PLAYING FIELD COMMITTEE | £42k | FY2025 | |
| THE OLD LIBRARY | £35k | FY2025 | |
| OLD LONDON ROAD PRE SCHOOL | £304k | FY2025 | |
| THE OLD MARKET CHARITABLE TRUST | £558k | FY2025 | going concern |
| OLD MASONIANS BENEVOLENT AND GRANT FUND | £26k | FY2026 | |
| OLD MEETING HOUSE | £77k | FY2024 | |
| THE OLD MEETING HOUSE TRUST | £2.2m | FY2025 | |
| THE OLD MILL FOUNDATION | £84k | FY2025 | |
| OLD MOAT YOUTH OUTREACH PROJECT | £105k | FY2025 | |
| THE OLD NEEDLE WORKS FOUNDATION | £361k | FY2025 | |
| OLD NEWTON UNDER FIVES CIO | £93k | FY2025 | |
| OLD NEWTON WITH DAGWORTH AND GIPPING VILLAGE HALL AND PLAYING FIELD CHARITY | £108k | FY2025 | |
| THE OLD ORCHARD CHARITABLE TRUST | £42k | FY2025 | |
| OLD OWEN'S ASSOCIATION AND SPORTS CLUB LIMITED | £101k | FY2025 | |
| OLD PARISH TRUST | £89k | FY2024 | |
| OLD PEOPLE'S WELFARE COMMITTEE FOR ROCHFORD AND DISTRICT | £26k | FY2025 | |
| OLD POSSUM'S PRACTICAL TRUST | £189k | FY2025 | |
| OLD POST REGENERATION ASSOCIATION | £94k | FY2025 | |
| THE OLD QUARRY ADVENTURE PLAYGROUND LTD | £457k | FY2025 | |
| OLD REDINGENSIANS ASSOCIATION LIMITED | £39k | FY2025 | |
| OLD RISHWORTHIAN SCHOLARSHIP FUND | £37k | FY2025 | |
| THE OLD ROFFENSIAN SOCIETY LIMITED | £41k | FY2024 | |
| OLD ROYAL NAVAL COLLEGE CHAPEL FUND | £69k | FY2025 | |
| OLD RUTLISHIANS' ASSOCIATION | £1.1m | FY2025 | |
| OLD SARUM COMMUNITY CENTRE | £103k | FY2025 | |
| OLD SARUM NURSERY | £135k | FY2025 | |
| THE OLD SCHOOL HALL MANAGEMENT COMMITTEE | £26k | FY2025 | |
| THE OLD SCHOOL HENSTEAD EDUCATIONAL TRUST LIMITED | £515k | FY2025 | |
| THE OLD SCHOOLHOUSE COMMUNITY PROJECT | £257k | FY2025 | |
| OLD SHARLSTON CRICKET CLUB | £80k | FY2025 | |
| THE OLD SHIRBURNIAN SOCIETY CHARITABLE TRUST 1975 | £53k | FY2025 | |
| OLD SODBURY VILLAGE HALL | £70k | FY2025 | |
| Old Southendian YFC | £28k | FY2025 | |
| THE OLD SPOTTED DOG GROUND TRUST LIMITED | £176k | FY2025 | |
| OLD STEVENAGE COMMUNITY ASSOCIATION | £71k | FY2025 | |
| OLD STRATFORD PARISH CHARITY | £101k | FY2026 | |
| OLD STRATFORD PRESCHOOL PLAYGROUP | £162k | FY2025 | |
| OLD SWINFORD HOSPITAL | £1.7m | FY2025 | |
| OLD THOMIANS' ASSOCIATION IN THE UNITED KINGDOM | £42k | FY2025 | |
| OLD TIME BIBLE WAY INTERNATIONAL MINISTRIES | £275k | FY2024 | |
| OLD TOWN HALL | £82k | FY2025 | |
| OLD TOWN YOUTH CLUB | £28k | FY2025 | |
| OLD TRAFFORD CHRISTADELPHIAN CHURCH | £46k | FY2025 | |
| OLD TRAFFORD MUSLIM SOCIETY | £368k | FY2026 | |
| THE OLD VIC ENDOWMENT TRUST | £106k | FY2025 | |
| THE OLD VIC THEATRE TRUST 2000 | £25.5m | FY2025 | |
| OLD VICARAGE CHARITABLE TRUST | £375k | FY2025 | |
| OLD VICARAGE SCHOOL TRUST | £4.0m | FY2025 | |
| OLD WARWICKIAN TRUST | £69k | FY2025 | |
| THE OLD WATERWORKS | £32k | FY2024 | |
| THE OLD WELLINGTONIAN SOCIETY CHARITABLE TRUST | £66k | FY2025 | going concern |
| OLD WINDSOR MEMORIAL HALL | £47k | FY2025 | |
| OLD WINDSOR PRE-SCHOOL | £58k | FY2024 | going concern |
| THE OLD WINDSOR UNITED CHARITIES | £70k | FY2025 | |
| OLD WOKING AND DISTRICT COMMUNITY CENTRE | £141k | FY2025 | trustee payments |
| OLDALONE UK | £79k | FY2025 | |
| OLDBURY BUSY BEES | £105k | FY2025 | |
| OLDBURY COURT OUT OF SCHOOL CLUBS | £451k | FY2025 | |
| THE OLDBURY FAITH FOUNDATION | £87k | FY2025 | |
| Oldbury on Severn War Memorial Hall | £47k | FY2025 | |
| OLDBURY REPERTORY PLAYERS LTD | £135k | FY2025 | |
| OLDCASTLE PRIMARY SCHOOL | £52k | FY2025 | |
| OLDEN COMMUNITY GARDEN | £32k | FY2025 | |
| OLDER CITIZENS ADVOCACY YORK | £108k | FY2025 | going concern |
| OLDER PEOPLE'S ACTION IN THE LOCALITY | £527k | FY2026 | |
| OLDER PEOPLE'S NEW OPPORTUNITIES CONSORTIUM (OPNOCS) | £28k | FY2025 | |
| OLDFIELD FREE CHURCH (BAPTIST) | £68k | FY2025 | |
| OLDFIELD PARK PRE-SCHOOL | £193k | FY2025 | reserves below policy |
| OLDFIELD PRE-SCHOOL | £152k | FY2025 | |
| OLDHAM ATHLETIC COMMUNITY TRUST | £464k | FY2025 | |
| OLDHAM BAPTIST CHURCH | £80k | FY2025 | |
| OLDHAM BETHEL CHURCH | £90k | FY2024 | |
| OLDHAM BOROUGH DISTRICT SCOUT COUNCIL | £77k | FY2025 | |
| OLDHAM CANCER SUPPORT CENTRE | £75k | FY2025 | trustee payments |
| OLDHAM CATS | £173k | FY2025 | |
| OLDHAM CENTRAL MASJID & ISLAMIC CENTRE | £522k | FY2025 | |
| Oldham Chapel | £30k | FY2024 | |
| THE OLDHAM COLISEUM THEATRE LIMITED | £667k | FY2025 | |
| THE OLDHAM ENGINEERING GROUP TRAINING ASSOCIATION LIMITED | £374k | FY2024 | |
| THE OLDHAM ENTERPRISE TRUST CIO | £44k | FY2025 | |
| OLDHAM FOODBANK | £168k | FY2024 | |
| THE OLDHAM FOUNDATION | £45k | FY2025 | |
| OLDHAM GREENHILL COMMUNITY SPORTS AND RECREATION CLUB | £371k | FY2025 | |
| OLDHAM INSPIRING YOUTH | £31k | FY2025 | going concern |
| OLDHAM INTERFAITH FORUM | £62k | FY2025 | |
| OLDHAM MADANI ACADEMY | £68k | FY2025 | |
| OLDHAM METHODIST CIRCUIT | £311k | FY2025 | |
| OLDHAM MOUNTAIN RESCUE TEAM | £65k | FY2024 | |
| OLDHAM PERSONAL ADVOCACY LIMITED | £352k | FY2025 | |
| OLDHAM PLAY ACTION GROUP | £183k | FY2025 | |
| THE OLDHURST TRUST | £120k | FY2025 | |
| OLDIES CLUB | £149k | FY2025 | |
| OLDLAND PRESCHOOL | £217k | FY2025 | |
| THE OLDLAND VILLAGE CLUB AND PUBLIC HALL | £57k | FY2024 | qualified opinion |
| OLDP CIO | £40k | FY2025 | |
| THE OLGA CHARITABLE TRUST | £59k | FY2025 | |
| THE OLI LEIGH TRUST | £37k | FY2026 | going concern |
| OLICANIAN CRICKET AND SPORTS CLUB | £106k | FY2025 | |
| OLIVE COMMUNITY PROJECT | £54k | FY2025 | |
| OLIVE ACADEMY | £67k | FY2025 | |
| THE OLIVE AND NORMAN FIELD CHARITY | £25k | FY2024 | |
| OLIVE BEARERS | £43k | FY2025 | |
| THE OLIVE BRANCH (FAITH IN ACTION) | £160k | FY2026 | |
| OLIVE BRANCH AID | £223k | FY2025 | |
| OLIVE BRANCH COUNSELLING | £103k | FY2025 | |
| The Olive Branch Counselling Service Limited | £185k | FY2024 | |
| OLIVE HIGH | £98k | FY2025 | |
| OLIVE LANTERN TRUST | £47k | FY2025 | |
| THE OLIVE MATTHEWS COLLECTION | £194k | FY2025 | |
| OLIVE PATHWAY | £229k | FY2025 | |
| THE OLIVE PROJECT | £205k | FY2025 | |
| OLIVE RIDLEY PROJECT | £574k | FY2024 | |
| OLIVE TREE CANCER SUPPORT GROUP | £207k | FY2025 | |
| THE OLIVE TREE CENTRE TRUST (SOUTH EAST) | £25k | FY2025 | |
| THE OLIVE TREE CHURCH | £111k | FY2025 | |
| OLIVE TREE EDUCATIONAL TRUST (RYK) | £60k | FY2025 | |
| THE OLIVE TREE TRUST | £32k | FY2025 | |
| THE OLIVE TRUST | £29k | FY2024 | going concern |
| THE OLIVER BORTHWICK MEMORIAL TRUST | £64k | FY2025 | |
| THE OLIVER CURD TRUST | £35k | FY2025 | |
| THE OLIVER FISHER SPECIAL CARE BABY TRUST | £190k | FY2023 | |
| OLIVER FORD FOUNDATION | £81k | FY2025 | not a going concern |
| OLIVER HEATON TRUST | £72k | FY2024 | going concern |
| OLIVER HIND CLUB | £27k | FY2024 | |
| THE OLIVER KING FOUNDATION | £251k | FY2025 | |
| THE OLIVER MORLAND CHARITABLE TRUST | £51k | FY2025 | |
| THE OLIVER PLUNKETT POSTGRADUATE CENTRE CHARITABLE TRUST | £44k | FY2025 | |
| THE OLIVER STEEPER FOUNDATION | £101k | FY2025 | |
| THE OLIVER WHITBY EDUCATIONAL FOUNDATION | £43k | FY2025 | |
| OLIVET ASSEMBLY | £1.2m | FY2025 | |
| OLIVIA INSPIRES | £32k | FY2025 | |
| OLIVIA SIEFF FOUNDATION | £41k | FY2024 | |
| THE OLLIE FOUNDATION | £227k | FY2025 | |
| OLLIE YOUNG FOUNDATION | £55k | FY2025 | |
| OLLINGHAM LIMITED | £453k | FY2025 | |
| OLLY'S FUTURE | £106k | FY2025 | |
| OLMEC | £242k | FY2025 | |
| OLNEY PRE-SCHOOL | £242k | FY2025 | |
| OLSEN ANIMAL TRUST | £904k | FY2025 | |
| OLTON AND DISTRICT UNIVERSITY OF THE THIRD AGE (U3A) | £43k | FY2026 | |
| OLTON BAPTIST CHURCH | £134k | FY2025 | |
| THE OLTON PROJECT CIO | £496k | FY2025 | |
| THE OLWYN FOUNDATION | £200k | FY2024 | trustee payments |
| The Olympia Charitable Trust | £35k | FY2024 | |
| OLYMPIAS MUSIC FOUNDATION | £349k | FY2025 | reserves below policy |
| OM International | £5.5m | FY2025 | |
| OM SARAVANABHAVA SEVA TRUST | £279k | FY2025 | going concern |
| Omar Al Farouq Islamic Foundation | £25k | FY2025 | |
| OMAR FARUQUE MOSQUE AND CULTURAL CENTRE | £74k | FY2024 | |
| THE OMAR FOUNDATION | £115k | FY2025 | |
| OMAR WELFARE HOUSE | £128k | FY2024 | |
| OMBERSLEY CHURCH HOUSES CHARITY | £78k | FY2025 | |
| OMBERSLEY CONSERVATION TRUST | £2.0m | FY2025 | trustee payments |
| OMEGA COMMUNITY LIVING LIMITED | £856k | FY2025 | |
| THE OMEGA COURSE | £28k | FY2025 | |
| OMEGA FIRE MINISTRIES LIVERPOOL | £209k | FY2026 | |
| OMEGA RESEARCH FOUNDATION LIMITED | £655k | FY2025 | reserves below policy |
| OMEGA – ENDING ISOLATION, ENDING LONELINESS LTD | £245k | FY2026 | |
| OMF INTERNATIONAL (UK) | £6.0m | FY2023 | |
| OMID FOUNDATION | £203k | FY2025 | |
| OMID TRUST | £77k | FY2026 | going concern |