Link-Up
Holleran has accreditation to carry out works within the following Link-Up product groups:
| 6520 | Cable Route Works |
| 6521 | Cable Supply & Laying |
| 5204 | Electrification - Supply & Install |
| 5115 | Lineside Structures: Brick & Concrete - Contractors |
| 5012 | Minor Builders Works (£500k-£3.5m) - Contractors |
| 5103 | Minor Civil Engineering (<£3.5m) - Contractors |
| 591801 | Supply of On Track Protection and Warning Staff |
| 591802 | Agency supply of On Track Labour |
| 512007 | Specialist Services - Thrust-boring & Pipe-jacking - Contractors |
| 511601 | Lineside Work: Tree Felling & Scrub Clearance - Contractors |
| 511602 | Vegetation Control - Off Track Weed killing - Contractors |
