Employment Rights Act 1996, section 44

(1)An employee has the right not to be subjected to any detriment by any act, or any deliberate failure to act, by his employer done on the ground that—

(a)having been designated by the employer to carry out activities in connection with preventing or reducing risks to health and safety at work, the employee carried out (or proposed to carry out) any such activities,

(b)being a representative of workers on matters of health and safety at work or member of a safety committee—

(i)in accordance with arrangements established under or by virtue of any enactment, or

(ii)by reason of being acknowledged as such by the employer,

the employee performed (or proposed to perform) any functions as such a representative or a member of such a committee,

[^F213 (ba)the employee took part (or proposed to take part) in consultation with the employer pursuant to the Health and Safety (Consultation with Employees) Regulations 1996 or in an election of representatives of employee safety within the meaning of those Regulations (whether as a candidate or otherwise),^F213]

(c)being an employee at a place where—

(i)there was no such representative or safety committee, or

(ii)there was such a representative or safety committee but it was not reasonably practicable for the employee to raise the matter by those means,

he brought to his employer’s attention, by reasonable means, circumstances connected with his work which he reasonably believed were harmful or potentially harmful to health or safety,

^F214 (d). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

^F215 (e). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

[^F216 (1A)A worker has the right not to be subjected to any detriment by any act, or any deliberate failure to act, by his or her employer done on the ground that—

(a)in circumstances of danger which the worker reasonably believed to be serious and imminent and which he or she could not reasonably have been expected to avert, he or she left (or proposed to leave) or (while the danger persisted) refused to return to his or her place of work or any dangerous part of his or her place of work, or

(b)in circumstances of danger which the worker reasonably believed to be serious and imminent, he or she took (or proposed to take) appropriate steps to protect himself or herself or other persons from the danger.^F216]

(2)For the purposes of subsection [^F217(1A)(b)^F217] whether steps which [^F218a worker^F218] took (or proposed to take) were appropriate is to be judged by reference to all the circumstances including, in particular, his knowledge and the facilities and advice available to him at the time.

(3)[^F219 A worker^F219] is not to be regarded as having been subjected to any detriment on the ground specified in subsection [^F220(1A)(b)^F220] if the employer shows that it was (or would have been) so negligent for [^F221the worker^F221] to take the steps which he took (or proposed to take) that a reasonable employer might have treated him as the employer did.

(4)^F222. . . This section does not apply where the [^F223worker is an employee and the^F223] detriment in question amounts to dismissal (within the meaning of [^F224Part X^F224] ).