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Jonathan David Sieff
Director at Advetec Leasing Limited · Director at Advetec Holdings Limited
- 6 current roles
- 4 previous roles
- Served alongside 44 people
Jonathan's network: 44 people across 10 organisations
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Official record Companies House and Charity Commission · updated 27th September 2026 · Free, no card or password
Current roles
10 roles across 10 organisations-
Advetec Leasing LimitedDirector · 2021-present
Official record · Companies House
- Source
- Companies House
- Organisation
- Advetec Leasing Limited
- Role
- Director
- Appointed
- 2021-03-31
- Record reference
- Company 09432878
Current -
Advetec Holdings LimitedDirector · 2018-present
Official record · Companies House
- Source
- Companies House
- Organisation
- Advetec Holdings Limited
- Role
- Director
- Appointed
- 2018-12-06
- Record reference
- Company 06048995
Current -
Conan Capital LLPLlp-designated-member · 2018-present
Official record · Companies House
- Source
- Companies House
- Organisation
- Conan Capital LLP
- Role
- Llp-designated-member
- Appointed
- 2018-08-07
- Record reference
- Company OC423674
Current
7 more roles, including 4 previous roles, with dates and sources
Sign in free to see all rolesPeople Jonathan has served alongside
44 people across 10 organisationsBased on overlapping official board records. Calculated from official records
44 people across 10 organisations
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Create a free account to checkSources
- Companies House
- Officer appointments and resignations.
- Charity Commission
- Register of Charities: current trustees and appointment dates.
- Edition
- Register edition compiled 27th September 2026
- Identity
- Records are treated as the same person only where the evidence confirms it. How people are matched