Drilling and Site Investigation
Wellscreen and casing, bentonite seals, filter media, well covers and core sampling for ground investigation and water wells.
Drilling, Geothermal, Groundwater, Landfill and Rail Supplies Get It Right Below Ground.
Wellscreen, Thermo-Loops®, grouts, landfill gas systems, undertrack drainage and drilling tooling, made and stocked by MGS in Suffolk and Coventry since 1988. Tell us what you are installing and we will help you specify it, price it and get it to site.
Can’t see it? and we’ll find it for you.
- Since 1988Supplying UK drillers
- ISO 9001:2015Both UK sites certified
- Network RailAccepted since 2005
- BDA MemberEvery year since 1988
- ISO 9001:2015Manufacture and supply, Bury St Edmunds and Coventry
- Network Rail AcceptedTerraRange, certificate PA05/02084, since 2005
- London UndergroundTerraRange product approval
- British Drilling AssociationMembers since 1988
- Ground Source Heat Pump AssociationMembers, working to GSHPA standards
Six Specialist Ranges
What Are You Working On?
More than 150 products across six ranges, and one team that knows how each of them goes in the ground. Pick your work to see what we stock.
Geothermal
Thermo-Loops®, thermal grout, manifolds, chambers and pipework for the ground side of ground source heat pump systems.
Groundwater
Sample, measure, monitor and pump: LeveLine loggers, dip meters, piezometers and QED remediation pumps and skimmers.
Landfill Gas and Leachate
Wellheads, telescopic shafts, knockout pots, manifolds, AutoPumps and gas analysers, many of them fabricated in our own works.
Rail Track Drainage
Demco’s Network Rail accepted TerraDrain™ and TerraLine™ for high load, shallow undertrack drainage, plus UKAS tested circular catchpits.
Rigs and Tooling
Rotary core bits, drill rods, casing, core lifters, packers, dynamic sampling kit and Pagani CPT rigs.
Quote Builder
Specify Your Installation, Layer by Layer
Choose a typical build, tap each layer to see the MGS product that goes there, and add what you need. Your list drops straight into the quote form for our sales team to price.
Groundwater Monitoring WellTypical installation · Not to scale
- 1
Lockable, water resistant aluminium cover rated to 178 kN and marked “Monitoring Well DO NOT FILL”. Details
- 2
Sets covers and posts solid with just water, in 5 to 10 minutes. No mixing needed. Details
- 3
Push-on, push-in or threaded caps from 19 to 630 mm, with or without gas valves. Details
- 4
Practically dust free sealing pellets that sink at 21 m a minute and need no mixing or pumping. Details
- 5
Plain PVC casing from 27 to 225 mm, flush or BSP jointed, made to DIN 4925. Details
- 6
Washed, dried silica filter pack in grades from 0.5 to 10 mm, bagged in 25 kg. Details
- 7
Slotted PVC screen with slots from 0.3 to 3 mm. Prefer no filter pack? Ask about GeoFilter™ socks. Details
- 8
Titanium level and temperature logger with a 10 year battery and room for 500,000 readings. Details
Closed-Loop Geothermal BoreholeTypical installation · Not to scale
- 1
Moulded chamber with flow control and measurement valves, pressure tested to 4 bar, with a 3.5 tonne lid. Large scheme? Ask about the U Boat. Details
- 2
PE100 pipe in coils from 20 to 180 mm or straight lengths, with electrofusion and butt fusion fittings. Details
- 3
PE100-RC single or double loops in 25 to 50 mm, made to the metre, each serial numbered and pressure tested. Details
- 4
Bentonite based thermal grout, mixed with our silica sand to a conductivity of 0.78 to 1.78 W/mK. Details
- 5
Sacrificial 32 or 40 mm PE80 tremie in coils up to 300 m, for grouting from the bottom up. Details
- 6
40 kg mild steel weights with a conical toe that take loops down tight or fluid-filled holes. Details
- 7
Ready to use heat transfer fluid with built-in freeze protection down to -22°C. Details
Landfill Gas and Leachate WellTypical installation · Not to scale
- 1
Landfill gas resistant PE wellhead with gas sampling and leachate dipping ports, and a flexible coupler that allows for settlement. Details
- 2
4 to 12 way manifolds with Safi ball valves, so several wells are balanced and controlled from one point. Details
- 3
HDPE pot that drops condensate out of the gas line, with a liquid seal that keeps oxygen out. Designed and made by MGS. Details
- 4
Coiled or straight PE100 in SDR 11 and 17 for gas and leachate lines, ready for butt or electrofusion. Details
- 5
Low dust, high swelling granules poured straight in to seal landfill gas wells. Details
- 6
Slotted or perforated HDPE with flush threaded joints, resistant to aggressive leachate. Details
- 7
Air-powered, ATEX certified pump that clears leachate and condensate as the well recharges. Details
- 8
Portable, ATEX certified analyser for CH4, CO2, O2, H2S and CO on monitoring rounds. Details
Track Bed Drainage by DemcoTypical section · Not to scale
- 1
Heavy-duty perforated collector for track bed drainage, built for loads of up to 82 tonnes directly under or beside the track, and laid as shallow as 300 mm. Details
- 2
Solid carrier for line-side drainage and under track crossings, with jacking loads up to 105 tonnes. Details
- 3
Solid wall HDPE catchpits for 6ft and cess zones, 500 to 1,000 mm, destruction tested by a UKAS approved laboratory. Details
- 4
Threaded, slotted pipe with a multi-layer filter screen for ballast drainage, embankments and cuttings. Details
Your list is empty
Add products from any build above, then send the list to the quote form.
Typical installations for guidance only. Every site is different, so our team checks your specification before quoting.
Made by MGS
We Make It, Not Just Sell It
Much of what we supply is extruded, slotted, welded or tested in our own works in Bury St Edmunds and Coventry. That means sizes, slots and fabrications made to your drawing, and one team accountable from quote to delivery.
Pipe Extrusion
Our own extrusion line in Bury St Edmunds produces high-performance pipe for ground source heat pumps, and can run other HDPE grades to your requirements.
Slotting, Perforating and Threading
Thermoplastic pipe from 12 to 710 mm, finished to specification: GeoScreen™, DuroScreen™, DuroDrain™, TerraDrain™, TerraLine™ and TerraFilter™.
Plastic and Steel Fabrication
Butt fusion, electrofusion, socket and extrusion welding for wellheads, knockout pots, manifolds and telescopic shafts, plus steel vent stacks and protective covers.
Design and Engineering
An in-house engineering team on 3D CAD develops the range, supports manufacturing and helps you get the specification right.
12 to 710 mmPipe slotted, perforated and threaded in-house
Every LoopThermo-Loops® serial numbered and pressure tested
4 barTest pressure for our geothermal manifold chambers
60+ YearsDesign life of Demco catchpits and track drainage
Proven in the Ground
Proven on Projects That Have to Last
Once a loop, a screen or a drain is in the ground, it has to work for decades. These are some of the jobs where it is MGS doing that work.
National Trust · Kingston Lacy, Dorset
Heating a Grade I Listed House From 32 Boreholes
The National Trust replaced Kingston Lacy’s oil boilers with ground source heat. Almost 6,000 m of MGS Thermo-Loops® went into 32 boreholes, each 180 m deep, beneath the estate’s overflow car park.
6,000 mof Thermo-Loops®, almost
30,000 Lof heating oil no longer burned each year
57 tof carbon a year, anticipated saving
One Horton Heath, Eastleigh
2,500 Homesplanned on 100% renewable heat
For the first 381 homes, Synergy Boreholes drilled 233 boreholes up to 150 m deep and fitted MGS Thermo-Loops®, loop weights and Connect Plus grout.
Comberton Village College
70% Lowercarbon emissions from heating
The largest ground source heat pump network at a UK secondary school: 60 Thermo-Loops® in 200 m boreholes, DC5 and DC6 chambers and 480 bags of Connect Plus grout.
Haweswater Aqueduct, United Utilities
1,000+Rhino® Coreboxes supplied
Core from more than 12 km of boreholes travelled to the lab in colour-coded Rhino® Coreboxes, on a ground investigation delivered in 18 months.
TransPennine Route Upgrade
1,400+ mof TerraDrain™ and TerraLine™
Demco helped specify, prove, make and supply the drainage now serving a 500 m stretch at the new Morley Station, designed for at least 60 years of maintenance-free service.
Demco drainage is also in the ground at
- Kings Cross Remodelling
- North London Line
- Ipswich Station
- Guildford Station
- Southampton Station
- Scarborough Station
- Ealing and Upminster
- Carstairs, Glasgow
- Ore Tunnel
- Crowhurst Embankment
- Botley Station, Oxford
In Their Words
Why Drillers Keep Coming Back
Large orders were delivered in a very short timeframe with great customer service. We’ve been using MGS for over 15 years and their quality products are second to none.
We have consistently found MGS to be responsive and professional in all their operations. Their customer care is exceptional, always going the extra mile when needed.
…we felt comfortable with not only the quality on offer from MGS, but also their availability to deliver on time and with great product support.
Stock and Service
Two UK Depots, Stocked and Ready
We hold large stocks of finished products and raw materials, so key lines go out promptly or wait for you to collect. Coventry opens at 7am for early starts.
Bury St Edmunds, Suffolk
Drilling and geothermal products
Geotechnical Centre, Rougham Industrial Estate, Rougham, Bury St Edmunds IP30 9ND- Call
- 01359 271167
- sales@mgs.co.uk
- Open
- Mon to Fri, 8:30am to 5:30pm
Coventry, West Midlands
Drilling, landfill and Demco rail drainage products
Heyford Close, Aldermans Green Industrial Estate, Coventry CV2 2QB- Call
- 024 7660 2323
- covsales@mgs.co.uk
- Open
- Mon to Fri, 7am to 5pm
MGS Europe GmbH, Erkelenz, Germany
Drilling and geothermal products · Brüsseler Allee 21c, 41812 Erkelenz · +49 (0)2431 945762 · Mon to Fri, 8:30am to 5:30pm
- Key Lines in StockFor prompt despatch or collection
- Collect or DeliverFrom Suffolk or Coventry
- People Who StayAverage length of service over 11 years
Since 1988
Below Ground Since 1988
MGS began as a partnership between Martin Clegg and Tony Osborne, supplying wellscreen and bentonite to the UK’s onshore drilling industry. Today we are a family-run business with sites in Suffolk, Coventry and Germany, and still members of the British Drilling Association we joined in our first year.
- 1988MGS founded to supply wellscreen and bentonite products.
- 1990Incorporated as Marton Geotechnical Services Ltd.
- 2002Demco, the original UK maker of thermoplastic wellscreen, joins MGS.
- 2003Terraequip in Germany acquired, now trading as MGS Europe.
- 2005Network Rail Certificate of Acceptance for the TerraRange.
- 20063,200 m² slotting, perforating and distribution centre opens in Coventry.
- 2011Geothermal Supplies Ltd acquired as ground source demand grows.
- 2023Exclusive UK and Ireland distributor for Aquaread’s LeveLine range.
- 2024Partnership with QED Environmental Systems for pumps and gas analysers.
- 2025In-house pipe extrusion for ground source heat pumps starts in Bury St Edmunds.
- 2026The U Boat Manifold Chamber and UKAS tested Demco catchpits launch.
What You Can Expect From Us
- We Do What We Say We Will DoStraight answers on stock, prices and lead times.
- We Have Can-Do AttitudesOdd sizes and urgent jobs are part of the work.
- We Have Attention to DetailSlot sizes, certificates and paperwork, checked.
- We CareAbout your project and the people on it.
Questions
Common Questions
The things buyers, drillers and engineers ask us most. Anything else, just call.
Need an Answer Today?
Our sales team is in the office Monday to Friday, 8:30am to 5:30pm.
01359 271167Can I collect from your depots?
Yes. Key products are kept in stock for prompt despatch or collection from Bury St Edmunds (Monday to Friday, 8:30am to 5:30pm) and Coventry (Monday to Friday, 7am to 5pm). Call ahead so we can check stock and get your order ready.
Can you make pipe or fabrications to my specification?
Often, yes. We slot, perforate and thread thermoplastic pipe from 12 to 710 mm, extrude HDPE pipe in-house, and fabricate in plastic and steel. Send your drawing or specification with your enquiry and our engineers will take a look.
Do Thermo-Loops® come with test certificates?
Every Thermo-Loop® carries its own serial number and is individually pressure tested, and we can provide a pressure test certificate for each loop. They are made from PE100-RC in 25, 32, 40, 45 and 50 mm, as single or double loops, to any length to the nearest metre, with a five year warranty.
Is TerraDrain™ approved for Network Rail and London Underground?
Yes. Demco’s TerraDrain™ and TerraLine™ have held a Network Rail Certificate of Acceptance (PA05/02084) since 2005, and the TerraRange has London Underground approval. Both comply with Network Rail’s Design for Reliability and London Underground’s M 3360 A2 drainage specifications.
Do you supply outside the UK?
Yes. MGS Europe GmbH in Erkelenz, Germany supplies drilling and geothermal products, and our ISO 9001:2015 certification covers the manufacture and supply of geotechnical and geo-environmental products worldwide. Tell us where the job is.
Where do I find data sheets and safety data sheets?
Each product page on mgs.co.uk carries its downloads, including safety data sheets for our grouts, bentonites and filter media. If you can’t find the one you need, ask and we will send it.
Can you help me choose the right product?
That is what we are here for. Our team has extensive hands-on experience across drilling, geothermal, groundwater, landfill and rail, and our engineers can support you from concept to completion with product selection, specification, costing and delivery.
Request a Quote
Tell Us What You Need
Send a materials list, a drawing or a quick description of the job. A specialist from the right range will come back to you with prices, stock and delivery.
- Specialists for drilling, geothermal, groundwater, landfill and rail
- Made-to-order slots, lengths and fabrications quoted too
- Collection from Suffolk or Coventry, or delivery to site