Your Construction Specialists

Complete drainage and plumbing coverage for your construction portfolio.

Construction

Harry Geary

Construction & Infrastructure Sector Manager

Harry is LDF’s Sector Manager for Construction & Infrastructure, with over 20 years in the drainage industry. That experience means he speaks the language of contractors, project managers and site teams, bringing clarity and commercial discipline to every scheme he oversees.

  • Leads technically complex, high-value drainage projects across London and the South East
  • Specialist in new-build drainage installations, infrastructure upgrades, and groundworks support
  • Single point of contact across the full project lifecycle, from pre-start through to completion
  • Works directly with contractors and project managers to keep programmes on time and on spec

Or call the commercial team 0800 612 2179

Construction

Steve Blackmore

Lead Estimator, Construction and Infrastructure

Steve is LDF’s Lead Estimator for Construction & Infrastructure, with over 20 years in the drainage industry. His ability to price complex, multi-discipline drainage scopes accurately and competitively is central to how LDF wins and delivers large-scale infrastructure contracts.

  • Specialist in estimating complex C&I drainage scopes, from groundworks to full infrastructure packages
  • Combines deep technical knowledge with commercial precision to produce accurate, competitive tenders
  • Works closely with project teams to ensure estimates reflect programme requirements from the outset
  • Over two decades of sector experience, giving contractors confidence in the numbers from day one

Or call the commercial team 0800 612 2179

Our Services for Construction

New installations, drainage surveys, and site services - delivered to programme and specification, with zero sub-contractors.

CCTV Drain Surveys

OS19-standard surveys that produce adoption-ready reports from day one - meeting the specification required by water authorities and major infrastructure clients.

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Installation Works

New drainage system installations for residential and commercial developments, delivered to specification and programme by directly employed engineers.

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Excavation Works

Full drainage excavation and replacement, planned around ground conditions and build sequence to minimise programme impact.

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Drain Jetting & Clearance

High-pressure jetting to clear construction debris, silt, and blockages from new and existing drainage systems on site.

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Vacuum Tanker Services

Sump emptying, silt and slurry removal, and large-volume liquid waste clearance for construction sites throughout the project programme.

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24/7 Emergency Response

Rapid mobilisation for drainage emergencies on construction sites - on site in under 4 hours, any time of day or night.

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Trusted by Leading Organisations

Case Studies

How we've helped businesses like yours.

CONSTRUCTION

Picote Concrete Removal at Heathrow Airport for BAM Nuttall Ltd

When BAM Nuttall's drainage investigation at Heathrow Airport uncovered hardened concrete blocking the tunnel drainage system, excavation wasn't an option. LDF passed financial and health and safety pre-qualification, completed a successful trial night, and delivered the full one-month project — removing concrete blockages from live airport tunnel drainage using Picote milling technology, working nights only in a tunnel carrying 500 vehicles an hour. On completion, BAM Nuttall engaged LDF to return for additional tunnels.

  • Picote milling used to remove hardened concrete from live Heathrow tunnel drainage without excavation or surface disruption
  • Works delivered on night shifts only (9pm–4:30am) over one month, with zero impact on daytime airport operations
  • BAM Nuttall engaged LDF to return for additional tunnel works following successful delivery

Read the full case study

Construction Drainage FAQs

An unvented hot water cylinder is a sealed system that connects directly to the mains water supply. It delivers hot water at high pressure without the need for a separate cold water tank in the loft, making it a more modern and space-efficient solution.

Can I use an unvented cylinder with any boiler?

Unvented cylinders work well with system or regular boilers, but not with combi boilers, as combi systems don’t require a hot water cylinder. Your installer will help determine the best setup based on your current system and hot water needs.

Are unvented systems safe?

Yes, unvented hot water cylinders are very safe when installed and maintained correctly. They are fitted with multiple safety features such as pressure relief valves, thermostats, and expansion vessels to prevent overpressure and overheating.

How much does scheduled drain maintenance cost?

Our scheduled drain maintenance services include unlimited free of charge callouts to all serviced drains, which gives our customers great peace of mind when it comes to knowing that an allocated annual budget for drainage work is in place for any work that is required. The costs of our drain maintenance service varies depending on...Continue reading→

Can drain maintenance help prevent emergency blockages?

Yes, regular drain maintenance is the most effective way to prevent emergency blockages. By routinely clearing your drains, we remove build-up before it becomes a major issue, reducing the likelihood of sudden blockages, overflows and potential property damage.

What are the benefits of signing up for a drain maintenance programme?

Our drain maintenance programme offers a proactive approach to keeping your drainage system in peak condition. Benefits include: Unlimited free callouts for serviced drainage Preventative maintenance to avoid costly repairs Improved hygiene by reducing odours and bacteria build-up Extended drain lifespan by minimising wear and tear Fixed costs, allowing you to plan your budget with...Continue reading→

What is included in a drain maintenance service?

Our drain maintenance service includes: High-pressure water jetting to clear build-up Electro-mechanical coring to remove scale and debris A full inspection of your drainage system Identification of potential issues before they escalate A detailed report on the work carried out and any recommendations for future care

How often should drain maintenance be carried out?

The frequency of maintenance depends on factors such as usage levels and the type of property. Domestic properties may require annual servicing, whereas businesses with heavy water usage—such as restaurants or hotels—may benefit from quarterly or even monthly maintenance. Our team at London Drainage Facilities Ltd can assess your system and recommend a tailored maintenance...Continue reading→

Yes, unvented hot water cylinders are very safe when installed and maintained correctly. They are fitted with multiple safety features such as pressure relief valves, thermostats, and expansion vessels to prevent overpressure and overheating.

Can I use an unvented cylinder with any boiler?

Unvented cylinders work well with system or regular boilers, but not with combi boilers, as combi systems don’t require a hot water cylinder. Your installer will help determine the best setup based on your current system and hot water needs.

What is an unvented hot water cylinder?

An unvented hot water cylinder is a sealed system that connects directly to the mains water supply. It delivers hot water at high pressure without the need for a separate cold water tank in the loft, making it a more modern and space-efficient solution.

How much does scheduled drain maintenance cost?

Our scheduled drain maintenance services include unlimited free of charge callouts to all serviced drains, which gives our customers great peace of mind when it comes to knowing that an allocated annual budget for drainage work is in place for any work that is required. The costs of our drain maintenance service varies depending on...Continue reading→

Can drain maintenance help prevent emergency blockages?

Yes, regular drain maintenance is the most effective way to prevent emergency blockages. By routinely clearing your drains, we remove build-up before it becomes a major issue, reducing the likelihood of sudden blockages, overflows and potential property damage.

What are the benefits of signing up for a drain maintenance programme?

Our drain maintenance programme offers a proactive approach to keeping your drainage system in peak condition. Benefits include: Unlimited free callouts for serviced drainage Preventative maintenance to avoid costly repairs Improved hygiene by reducing odours and bacteria build-up Extended drain lifespan by minimising wear and tear Fixed costs, allowing you to plan your budget with...Continue reading→

What is included in a drain maintenance service?

Our drain maintenance service includes: High-pressure water jetting to clear build-up Electro-mechanical coring to remove scale and debris A full inspection of your drainage system Identification of potential issues before they escalate A detailed report on the work carried out and any recommendations for future care

How often should drain maintenance be carried out?

The frequency of maintenance depends on factors such as usage levels and the type of property. Domestic properties may require annual servicing, whereas businesses with heavy water usage—such as restaurants or hotels—may benefit from quarterly or even monthly maintenance. Our team at London Drainage Facilities Ltd can assess your system and recommend a tailored maintenance...Continue reading→

Yes, because unvented cylinders rely on mains pressure, it’s important to have a strong and consistent water supply. A qualified installer will assess your pressure levels during the initial survey to ensure suitability.

Can I use an unvented cylinder with any boiler?

Unvented cylinders work well with system or regular boilers, but not with combi boilers, as combi systems don’t require a hot water cylinder. Your installer will help determine the best setup based on your current system and hot water needs.

Are unvented systems safe?

Yes, unvented hot water cylinders are very safe when installed and maintained correctly. They are fitted with multiple safety features such as pressure relief valves, thermostats, and expansion vessels to prevent overpressure and overheating.

What is an unvented hot water cylinder?

An unvented hot water cylinder is a sealed system that connects directly to the mains water supply. It delivers hot water at high pressure without the need for a separate cold water tank in the loft, making it a more modern and space-efficient solution.

How much does scheduled drain maintenance cost?

Our scheduled drain maintenance services include unlimited free of charge callouts to all serviced drains, which gives our customers great peace of mind when it comes to knowing that an allocated annual budget for drainage work is in place for any work that is required. The costs of our drain maintenance service varies depending on...Continue reading→

Can drain maintenance help prevent emergency blockages?

Yes, regular drain maintenance is the most effective way to prevent emergency blockages. By routinely clearing your drains, we remove build-up before it becomes a major issue, reducing the likelihood of sudden blockages, overflows and potential property damage.

What are the benefits of signing up for a drain maintenance programme?

Our drain maintenance programme offers a proactive approach to keeping your drainage system in peak condition. Benefits include: Unlimited free callouts for serviced drainage Preventative maintenance to avoid costly repairs Improved hygiene by reducing odours and bacteria build-up Extended drain lifespan by minimising wear and tear Fixed costs, allowing you to plan your budget with...Continue reading→

What is included in a drain maintenance service?

Our drain maintenance service includes: High-pressure water jetting to clear build-up Electro-mechanical coring to remove scale and debris A full inspection of your drainage system Identification of potential issues before they escalate A detailed report on the work carried out and any recommendations for future care

How often should drain maintenance be carried out?

The frequency of maintenance depends on factors such as usage levels and the type of property. Domestic properties may require annual servicing, whereas businesses with heavy water usage—such as restaurants or hotels—may benefit from quarterly or even monthly maintenance. Our team at London Drainage Facilities Ltd can assess your system and recommend a tailored maintenance...Continue reading→

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Ready to discuss drainage support for your construction project?

Talk to our team about programme integration, OS19 surveys, and site drainage services - from groundworks to completion.