Your Housing Specialists

Comprehensive drainage and plumbing delivery for housing projects.

Local plumbing company London

Social Housing

Ali Sigdeniz

Group Sector Manager

Ali is LDF’s Group Sector Manager – Social Housing, joining the business following his most recent role with The Guinness Partnership and bringing extensive experience across the social housing and property maintenance sector.

Having progressed from frontline maintenance delivery through to Contract Supervisor, Contract Manager and Operations Manager roles, Ali has a strong understanding of the complete service journey – from what happens inside a resident’s home through to the operational performance, KPIs and SLAs that matter at contract level.

His previous experience includes working with Axis CLC, Laker BMS and MCP Property Services, where he has managed both planned and reactive maintenance programmes across occupied social housing environments.

  • Strong operational understanding of planned and reactive maintenance, with experience managing performance against demanding KPIs and SLAs
  • Experienced across multiple social housing workstreams, including responsive repairs, disrepair, damp & mould, voids, kitchens and bathrooms
  • Brings a practical understanding of delivering services within occupied homes, with a focus on resident experience, communication and first-time fix
  • Experienced in supervising operatives and planners and coordinating the effective delivery of housing maintenance contracts
  • Provides LDF’s Social Housing clients with a dedicated senior point of contact, ensuring clear ownership, accountability and escalation
  • Uses his client and contractor-side experience to bridge the gap between client expectations and operational delivery, helping ensure LDF continually improves the service provided to residents and housing partners

Ali’s focus at LDF is simple: to provide our Social Housing partners with consistent ownership, reliable communication and a service that delivers for both the client and, importantly, the resident.

Call Ali directly: 07984 883523

Or call the commercial team 0800 612 2179

Social Housing

Matt Freeman

Lead Estimator

Matt is LDF’s Lead Estimator for Housing, with over 15 years of drainage industry experience built from the ground up as a time-served engineer. That background gives him a perspective that purely commercial estimators can’t replicate: the physical realities of drainage work in occupied residential settings, and what it takes to price a compliant, first-time fix accurately.

  • Specialist in estimating drainage scopes across occupied residential settings, accounting for access constraints, disruption management and resident communication
  • Deep knowledge of the compliance requirements facing social housing providers, including the response timescales introduced under Awaab’s Law
  • Ensures pricing reflects the real-world demands of housing associations, local authorities and private residential clients across London and the South East
  • Proposals are built on hands-on engineering experience, giving housing clients confidence that the numbers reflect what the job actually involves

Or call the commercial team 0800 612 2179

Our Services for Housing

From volume reactive programmes to estate-wide planned maintenance - covering every drainage and plumbing need across your housing stock.

Planned Preventative Maintenance

Volume PPM programmes for housing association portfolios - structured to reduce repeat call-outs and support compliance obligations across your entire stock.

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Drain Unblocking

Fast response to blocked drains and toilets in occupied homes - deployed with resident communication standards that protect your satisfaction scores.

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CCTV Drain Surveys

OS19-standard surveys to identify drainage issues before they escalate, with reports suitable for compliance, asset management, and regulatory reporting.

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Drain Repairs & Lining

No-dig structural repairs and relining to resolve drainage failures without excavation, minimising disruption to residents throughout.

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Vacuum Tanker Services

Cesspit and interceptor emptying, silt clearance, and large-volume liquid waste removal across your housing stock - delivered at the speed and scale your compliance obligations require.

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24/7 Emergency Response

Rapid mobilisation for drainage emergencies in occupied homes - on site in under 4 hours, every hour of every day.

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Trusted by Leading Organisations

Case Studies

How we've helped businesses like yours.
New soil stack installation at Lewisham Park Towers residential regeneration project

HOUSING

Soil Stack Installation and Underground Drainage at Lewisham Park Towers for Axis, on behalf of L&Q

Lewisham Park Towers is a three-tower residential regeneration involving full cladding replacement, kitchen and bathroom refurbishment, and a complete soil stack renewal programme. London Drainage Facilities were engaged by Axis, on behalf of L&Q, to deliver the drainage scope: new soil stacks running the full height of all three towers, underground drainage connections for every property, and temporary site welfare installations. Delivered across four phases over two years, the drainage works were coordinated closely alongside the cladding and refurbishment programmes, with all phases completed by August 2025.

  • New soil stacks installed the full height of three occupied towers, connected to a fully upgraded underground drainage network
  • Drainage scope valued at approximately £800k, delivered for Axis, on behalf of L&Q, across four phases over a two-year programme
  • All four phases completed by August 2025, coordinated throughout alongside simultaneous cladding and refurbishment works

Read the full case study

Housing Drainage FAQs

Blocked drains can occur for several reasons, including:

  • Build-up of grease, fat and food waste in kitchen sinks
  • Hair and soap scum accumulation in bathroom drains
  • Flushing of wet wipes, sanitary products or excessive toilet paper
  • Tree root intrusion into underground pipes
  • Collapsed, cracked or misaligned pipes
    At London Drainage Facilities Ltd, we use advanced techniques like CCTV drain surveys to identify the exact cause and provide the most effective 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.

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

Common signs of a blocked drain include:

  • Water draining slowly from sinks, toilets or showers
  • Unpleasant odours coming from drains
  • Gurgling sounds in pipework
  • Rising water levels in toilets
  • Overflowing or backed up drains outside
    If you notice any of these signs, contact London Drainage Facilities Ltd immediately for a professional inspection and clearance.

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

If you notice slow drainage, bad odours, gurgling noises, damp patches or water pooling, these could all be signs of a damaged drain. A professional CCTV drain survey can help identify the exact issue.

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

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Ready to discuss a drainage contract for your housing portfolio?

Talk to our commercial team about volume PPM programmes, Awaab's Law compliance, and high-frequency reactive cover.