| Education centre | Town | Status | Last updated | Bus problem |
| Oak Green School | Aylesbury | No closure reported today | 05/07/2023 17:11:17 |
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| Oak Green School Early Years | Aylesbury | No closure reported today | 29/11/2012 15:28:35 |
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| Oakley Church of England Combined School | Aylesbury | No closure reported today | 19/12/2022 20:19:31 |
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| Oakley Church of England School Early Years | Aylesbury | No closure reported today | 29/11/2012 15:28:35 |
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| Oakleys Pre School | High Wycombe | No closure reported today | 29/11/2012 15:28:35 |
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| Oakridge School | High Wycombe | No closure reported today | 05/07/2023 10:05:56 |
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| Oakridge School early years | High Wycombe | No closure reported today | 29/11/2012 15:28:35 |
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| The Oaks Primary PRU | Amersham | No closure reported today | 01/02/2019 06:45:53 |
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| Oakwood Nursery School | Beaconsfield | No closure reported today | 29/11/2012 15:28:35 |
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| Odds Farm Park Day Nursery | | No closure reported today | 04/05/2014 01:10:53 |
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| Odds Farm Park Day Nursery | | No closure reported today | 04/05/2014 01:10:53 |
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| Old MacDonald's Day Nursery (Latimer) | Chesham | No closure reported today | 29/11/2012 15:28:35 |
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| Old Town Day Nursery Beaconsfield | Beaconsfield | No closure reported today | 06/04/2020 09:36:33 |
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| Ollie Owl Amersham | | No closure reported today | 04/05/2014 01:10:53 |
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| Ollie Owl Day Nursery | | No closure reported today | 04/05/2014 01:10:53 |
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| Our Lady's Catholic Primary School | Amersham | No closure reported today | 18/02/2022 08:16:10 |
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| OurTime Children’s Services Ltd | High Wycombe | No closure reported today | 16/07/2022 23:16:30 |
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| Over the Moon Day Nursery | High Wycombe | No closure reported today | 01/02/2019 08:12:33 |
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| Overstone Combined School | Leighton Buzzard | No closure reported today | 07/07/2023 09:10:22 |
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| Overstone Combined School Pre-School | Leighton Buzzard | No closure reported today | 29/11/2012 15:28:35 |
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