The red node is Sam. Pale nodes are charities, grey nodes are companies, and darker grey nodes are the people who sit on them. Sign in free to explore further.
Person Preview
Sam Bartrum Wallis
Sam Bartrum Wallis is a director of Lumen Topco Limited and a director of Lumen Bidco Limited, among 3 current roles on record. Source: Companies House records.
Director at Lumen Topco Limited · Director at Lumen Bidco Limited
- 3 current roles
- 1 previous role
- Served alongside 31 people
Sam's network: 31 people across 4 organisations
Anyone can join - you don't need to be on the register. Used by researchers, journalists, recruiters and due diligence teams.
Private by default - we never tell anyone you looked them up. Viewing, searching, saving and shortlisting are private; people only hear from you if you choose to send them a message.
Official record Companies House · updated 11th October 2026 · Free, no card or password
Current roles
4 roles across 4 organisations-
Lumen Topco LimitedDirector · 2023-present
Official record · Companies House
- Source
- Companies House
- Organisation
- Lumen Topco Limited
- Role
- Director
- Appointed
- 2023-10-06
- Record reference
- Company 15092183
Current -
Lumen Bidco LimitedDirector · 2023-present
Official record · Companies House
- Source
- Companies House
- Organisation
- Lumen Bidco Limited
- Role
- Director
- Appointed
- 2023-10-06
- Record reference
- Company 15101669
Current -
GIA Surveyors LTDDirector · 2022-present
Official record · Companies House
- Source
- Companies House
- Organisation
- GIA Surveyors LTD
- Role
- Director
- Appointed
- 2022-07-06
- Record reference
- Company 14032506
Current
1 more role, including 1 previous role, with dates and sources
Sign in free to see all rolesPeople Sam has served alongside
31 people across 4 organisationsBased on overlapping official board records. Calculated from official records
31 people across 4 organisations
Create a free account to reveal this governance network and see how you're connected.
Create a free account to revealConnections
Connection map
The organisations and people around Sam, shown in full after you sign in.
How are you connected?
Create a free account to see the recorded route between you and Sam, if there is one.
Create a free account to checkSources
- Companies House
- Officer appointments and resignations.
- Edition
- Register edition compiled 11th October 2026
- Identity
- Records are treated as the same person only where the evidence confirms it. How people are matched