CSL
UKWho owns CSL?
CSL is a British Telecom company, formerly owned by ECI Partners and Bowmark Capital, exited in 2025 (exit via Continuation Vehicle). No current private equity owner is on file.
Hand-verified · updated 2026-04-21
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- ·Fully exited in 2025 to ECI-managed continuation fund (backed by Carlyle AlpInvest, HarbourVest Partners and Pantheon).
- ·Best return: 3.5x MOIC by ECI Partners (2025 exit).
- ·Average hold across 2 realized cycles: 6 years.
Ownership history
2 ownership periods
Bowmark Capital sold CSL to ICONIQ Capital, Norland Capital and RIT Capital Partners in 2016 after 5 years.
ECI Partners sold CSL to ECI-managed continuation fund (backed by Carlyle AlpInvest, HarbourVest Partners and Pantheon) in 2025 after 7 years.
More from ECI 11
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US
BelgiumQuestions
Who owns CSL?
CSL was formerly owned by ECI Partners and Bowmark Capital, exited in 2025. No current private equity owner is on file.
Who did CSL sell to?
ECI Partners sold CSL to ECI-managed continuation fund (backed by Carlyle AlpInvest, HarbourVest Partners and Pantheon) in 2025 (Continuation Vehicle), 3.5x return. Bowmark Capital sold CSL to ICONIQ Capital, Norland Capital and RIT Capital Partners in 2016 (Secondary).
Who has owned CSL over time?
CSL has been through 2 private-equity ownership periods: Bowmark Capital · via Bowmark Capital Partners IV · 2011–2016 · sold to ICONIQ Capital, Norland Capital and RIT Capital Partners · (Secondary); ECI Partners · via ECI 11 · 2018–2025 · sold to ECI-managed continuation fund (backed by Carlyle AlpInvest, HarbourVest Partners and Pantheon) · (Continuation Vehicle) · 3.5x.