This is a common law offence which means that it does not come under particular legislation. The law surrounding it is from case law rather than legislation by parliament.

If you look at what must be proved that is basically what the law is in relation to this charge.

There is then a lot of case law that explains this law in greater detail.

1. Either

(i)  the accused offered;
(ii)  a reward to another person;
(iii)   to influence the behaviour of the public officer to act corruptly ;
(iv)  the other person was in a public office;

or

(i)  the accused was a public official;
(ii)  the accused received a reward from another person;
(iii)  the accused did so corruptly.

Facutual dispute

Impossibility

Lack of intent

identification dispute