BP employees have been warned that they now risk dismissal if they fail to disclose intimate workplace relationships, under a newly introduced policy.

The policy, which was announced by email last week, will see the oil giant’s 90,000-strong workforce ordered to declare any relationships they have with fellow staff members.

The revised regulations have also banned them from “directly or indirectly managing” anyone they are in a close relationship with, including family members, while over 4,500 managers have been given three months to declare any office affairs from the past three years.

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The new rules, due to impact thousands of executives and middle-managers, comes after former boss Bernard Looney quit in September last year after admitting he had not been “fully transparent” about his past relationships.

It was revealed that the executive had misled BP’s board about a string of romantic affairs he had had with fellow colleagues, and had not disclosed these relationships when asked.

Elsewhere, BP has had a series of senior shake-ups in its retail and convenience arm. Last September saw the appointment of Joanne Hall as its new retail operations director, as the company embarked on its plan to grow its convenience retail business in the UK.

Since Hall’s appointment, BP has also brought on board David Phillpot as its new convenience trading director, while Jo Hayward has been promoted to VP of mobility and convenience retail UK, and Natalie Cattermole in the role of senior dealer manager.

BP has been contacted for comment.