The Severn Trent tunnelling framework covers tunnelling, drilling, and shaft works in England and Wales
The procurement is split into two lots: build-only works, worth £300m, and design-and-build works worth £900m.
It is set to last 12 years, starting in 2026, with the option to extend by an additional 3 years to 2041.
The framework covers the North East, North West, Yorkshire & the Humber, the Midlands, East of England, London, the South East, the South West, and Wales.
Across the two lots, 17 work types have been listed, including thrust boring, horizontal directional drilling, pipe ramming, and more.
The works feature a heavy focus on trenchless drilling techniques. It is expected that between five and seven contractors will be appointed in each lot.
The full list of works:
- Lot 1B Pipe Ramming
- Lot 1D&B Pipe Ramming
- Lot 2B Thrust Boring
- Lot 2D&B Thrust Boring
- Lot 3B Horizontal Directional Drilling (25-630)
- Lot 3D&B Horizontal Directional Drilling (25-630)
- Lot 4B Horizontal Directional Drilling (630-1200)
- Lot 4D&B Horizontal Directional Drilling (630-1200)
- Lot 5B Horizontal Directional Drilling – Rock Drilling (50-500)
- Lot 5D&B Horizontal Directional Drilling – Rock Drilling (50-500)
- Lot 6B Timber Heading
- Lot 6D&B Timber Heading
- Lot 7B Micro Tunnelling
- Lot 7D&B Micro Tunnelling
- Lot 8B Auger Boring
- Lot 8D&B Auger Boring
- Lot 9B Direct Pipe
- Lot 9D&B Direct Pipe
- Lot 10B Pipe Jacking
- Lot 10D&B Pipe Jacking
- Lot 11B Segmental Tunnelling
- Lot 11D&B Segmental Tunnelling
- Lot 12B Under Pinning (Free Air)
- Lot 12D&B Under Pinning (Free Air)
- Lot 13B Under Pinning (Compressed Air)
- Lot 13D&B Under Pinning (Compressed Air)
- Lot 14B Open Caisson Wet
- Lot 14D&B Open Caisson Wet
- Lot 15B Open Caisson Dry
- Lot 15D&B Open Caisson Dry
- Lot 16B Sheet Piled Pits
- Lot 16D&B Sheet Piled Pits
- Lot 17B Timber Shafts
- Lot 17D&B Timber Shafts
Applicants will need to demonstrate drilling or tunnelling capability and will only be awarded lots when they have demonstrated the required skills.
The deadline for participation is 28 April, with award decisions expected to come in late September. Applicants can register here.
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