Cleaning and catering giant Mitie faces a shareholder row over a potential £5.7 million bonus for boss Phil Bentley.

The performance-related payout is part of a bonus plan drawn up after last year’s £271 million takeover of bust outsourcing firm Interserve’s facilities management arm.

Two influential advisory firms, Glass Lewis and Institutional Shareholder Services, have advised investors to vote against the share bonus plan at next week’s annual meeting.

Bentley, 62, the former boss of British Gas who made his fortune running Cable & Wireless from Miami, is in line for a one-off award, along with other executives, that could pay out in three years. It would amount to 640 per cent of Bentley’s £900,000 salary if he achieved all targets. Bentley was paid £2.7