Medical and fitness requirements are applied only where they form part of the current recruitment standard for the role.
Medical assessment
The live vacancy and recruitment instructions state the applicable medical assessment. BMI is not used to invent a separate eligibility rule.
Why BMI may be considered
Where the applicable medical standard uses BMI or another body-composition measure, it forms one part of the recruitment medical assessment rather than a stand-alone careers rule.
Individual assessment
Candidates should follow the instructions issued for the campaign and provide information requested through the authorised medical process.
If you are concerned
Contact Recruitment or the medical route identified for the campaign rather than assuming that a general number automatically determines the outcome.