The red node is John. Pale nodes are charities, grey nodes are companies, and darker grey nodes are the people who sit on them. Dashed links are historical or inferred. Click any node to explore.
Person
Dr John Dixon Halliday
Dr John Dixon Halliday is a director of 2 companies. Source: Companies House records.
Director at Harmeny Services Limited · Director at Harmeny Education Trust Limited
- 2 current roles
- 5 previous roles
- Served alongside 50 people
Official record Companies House · updated 11th October 2026
Roles
7 roles across 6 organisations (2 current, 5 previous)Current roles (2)
-
Harmeny Services LimitedDirector · 2023-present
Official record · Companies House
- Source
- Companies House
- Organisation
- Harmeny Services Limited
- Role
- Director
- Appointed
- 2023-06-26
- Record reference
- Company SC187099
Current -
Harmeny Education Trust LimitedDirector · 2022-present
Official record · Companies House
- Source
- Companies House
- Organisation
- Harmeny Education Trust Limited
- Role
- Director
- Appointed
- 2022-03-31
- Record reference
- Company SC162021
Current
Previous roles (5)
-
Merchiston Castle SchoolDirector · 2021
Official record · Companies House
- Source
- Companies House
- Organisation
- Merchiston Castle School
- Role
- Director
- Appointed
- 2021-03-15
- Ended
- 2021-04-20
- Record reference
- Company SC014265
Previous -
HMC - the Heads' ConferenceDirector · 2016-2018
Official record · Companies House
- Source
- Companies House
- Organisation
- HMC - the Heads' Conference
- Role
- Director
- Appointed
- 2016-09-01
- Ended
- 2018-08-31
- Record reference
- Company 00101760
Previous -
ST Aloysius' CollegeDirector · 2015-2019
Official record · Companies House
- Source
- Companies House
- Organisation
- ST Aloysius' College
- Role
- Director
- Appointed
- 2015-03-16
- Ended
- 2019-08-22
- Record reference
- Company SC405951
Previous -
Scottish Council of Independent SchoolsDirector · 2007-2013
Official record · Companies House
- Source
- Companies House
- Organisation
- Scottish Council of Independent Schools
- Role
- Director
- Appointed
- 2007-03-09
- Ended
- 2013-04-19
- Record reference
- Company SC125368
Previous -
Scottish Council of Independent SchoolsDirector · 2000-2001
Official record · Companies House
- Source
- Companies House
- Organisation
- Scottish Council of Independent Schools
- Role
- Director
- Appointed
- 2000-03-16
- Ended
- 2001-05-08
- Record reference
- Company SC125368
Previous
Company roles, current and past, as filed at Companies House.
People John has served alongside
50 people across 1 organisationBased on overlapping official board records. Calculated from official records It does not mean they know each other. Only formal co-service is listed: people are never joined on a matching name alone.
HMC - the Heads' Conference 50 people · 1991-2018
- Angela Margaret Drew2017-2018
- Christopher Nicholas Staley2017-2018
- Jesse Rupert Elzinga2017-2018
- Martin Anthony Richard Collier2017-2018
- Nicholas John Gregory2017-2018
- Robert Moore Robinson2017-2018
- Simon James Mills2017-2018
- Andrew Hamilton Chicken2016-2017
- Chris David Ramsey2016-2018
- Christopher Peter Morgan King2016-2018
- David Charles Elstone2016-2018
- David Cook2016-2017
- David William Goodhew2016-2018
- Dr David John Lamper2016-2018
- Dr Jonathan Mark Cox2016-2017
- Emma Jane Frances Hattersley2016-2018
- Gus Richard Lock2016-2018
- Ian Davies2016-2017
- John William Watson2016-2018
- Jonathan Paul Standen2016-2018
- Kathryn Anne Crewe-Read2016-2017
- Mark Edward Ronan2016-2018
- Mary Breen2016-2018
- Michael Ross Buchanan2016-2018
- Nicholas John Weaver2016-2017
- Paul Crute2016-2017
- Peter Bryan Hamilton2016-2017
- Peter Joseph Armstrong2016-2017
- Richard Paul Backhouse2016-2018
- Shaun Alan Fenton2016-2018
- Steffan Daniel Anderson Griffiths2016-2018
- Thomas David Wheare2005-2018 dates incomplete
- Vivian Anthony2000-2018 dates incomplete
- Dr John Michael Moore1998-2018 dates incomplete
- Anthony Clive Varteg Evans1997-2018 dates incomplete
- Roy De Courcy Chapman1995-2018 dates incomplete
- Robert Julian Wilson1994-2018 dates incomplete
- Colin William Turner1993-2018 dates incomplete
- John Stephen Baxter1993-2018 dates incomplete
- James Stephen Woodhouse1993-2018 dates incomplete
- Anthony Hugh Beadles1992-2018 dates incomplete
- Dr John Marcus Blatchly1992-2018 dates incomplete
- James Geoffrey Parker1992-2018 dates incomplete
- James William Flecker1992-2018 dates incomplete Likely the same person
- Philip Frederick Johnston1992-2018 dates incomplete
- Alan Lee1991-2018 dates incomplete
- Anthony Derwent Pickering1991-2018 dates incomplete
- Nicholas Raymond Bomford1991-2018 dates incomplete
- Richard Christopher Poulton1991-2018 dates incomplete
- Robert Giles Graham Mercer1991-2018 dates incomplete
People marked “Likely the same person” are reached through a record that is a likely relationship to John: there is sufficient evidence to suggest it concerns the same individual, but it is not established as confirmed.
Sources
- Companies House
- Officer appointments and resignations.
- Edition
- Register edition compiled 11th October 2026
- Identity
- Records are treated as the same person only where our identity-matching rules support it. Confirmed relationships are supported by the approved identity-matching evidence and rules. Likely relationships are supported by sufficient evidence to suggest the records concern the same individual, but are not established as confirmed; they are shown with the label “Likely the same person”. How people are matched
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