The employee and early investor auction valued the workplace trust company at over £100 million and marked the third transaction conducted under the PISCES framework.
The 15-asset vehicle, among the largest GP-led infrastructure deals to date, drew more than $7 billion of demand and included around $2.5 billion of new capital.
The manager is also reportedly in advanced talks to acquire GIC and Silver Lake Partners' stakes in the breakdown recovery service provider, alongside other investors.