if a fixed term contract is not renewed and the work still exist in the same format, including hours, title and rate of pay what rights does the employee have.

Due to restructuring all non permanent contracts have been terminated and notice served to employees. Their jobs are being placed in a pool for permanent staff at risk of redundancy, if there are no staff at risk the post will be advertised generally.

Is this ok or are there potential challenges to these actions
Bola Ajani