Bishop Mason was formerly the acting Bishop of Liverpool before Bishop Perumbalath was enthroned in 2023. She said in March 2023 she was made aware of a complaint against Bishop Perumbalath which involved an investigation by the church's National Safeguarding Team.

The bishop of Liverpool, John Perumbalath, has denied a set of sexual assault allegations by two different women including a fellow church leader, according to multiple reports.

Rt Rev John Perumbalath denies groping woman and kissing her without consent as well as sexually harassing another woman