- - £ The Twenty One Group are looking for Plumbers and Mates for an immediate start in the Lake District working on an extension to a Prison. Plumbers £48 per hour Mates £36 per hour Site hours are 40 per week - project will last for 8 weeks You must either have SC clearance, national security level clearance or an EL1 Certificate to get access to this project. If your certificate is held by a sponsoring company, we will require evidence to allow the prison to check and verify via their systems. Please get in contact for more details: (phone number removed)...