Discrimination at work has a legal definition and structure that is mainly contained in the Equality Act 2010.
The Equality Act applies only to individuals and groups that have particular characteristics (called 'protected characteristics') who have been subject to certain types of treatment (called 'prohibited conduct'). An individual who believes thay have been subject to discrimination will have to show that it fits within these definitions in the Equality Act.
Use the links below to check if you are protected under the Equality Act and then whether the conduct you have experienced is unlawful.
The Equality Act has other provisions which support equal pay between men and women known as 'equality of terms'.