Three white Scania trucks branded with Drainline Southern logos parked in a yard under a clear blue sky.

Powered by the Samsara Connected Operations Platform

Meet Drainline Southern Ltd

150 VEHICLES ON THE ROAD
300+ STAFF ACROSS THE UK
24/7/365 SPECIALIST DRAINAGE OPERATION

In eight years the business has grown from roughly £1 million in turnover to close to £30 million, expanding to 150 vehicles and around 300 staff.

The Challenge

Restoring control over runaway claims costs 

Drainline Southern Ltd provides specialist drainage, tanker, and highway services to tier one contractors, local councils, and bodies like Transport for London (TfL), preventing floods and keeping Britain’s highways draining freely. This means running heavy goods vehicles in the public network every day, from major motorways networks to residential cul-de-sacs. 

Back at the depots, the team had systems in place for managing the risks before drivers hit the road, through daily safety briefings, toolbox talks and method statements. But this ended the second a vehicle left the depot, becoming invisible for management until the driver returned home. 

For Paul Monck, the company’s Safety, Health, Environment and Quality (SHEQ) Director, this blind spot was a constant source of worry, and cost. When 18-tonne gully cleaners share tight streets with pedestrians and public vehicles, some friction is inevitable. But a spate of low-impact events, typically reversing incidents and crashes with stationary objects, had put the company on notice with its insurer. Slow reporting habits, with paperwork lingering on desks for days after incidents, inflated the cost of each claim still further. By 2023, Drainline had racked up £141,000 in total incurred costs in a single year, with individual losses topping £30,000. With their claims ratio out of control, their underwriter made it clear that something had to change.

The Solution

A connected view of everything that happens on the road

Facing the prospect of a difficult conversation with their insurance, Drainline sought a technological solution that could show them exactly what was happening on the road, at all times. They didn’t just want a camera. They wanted second-by-second insight into the difficult environments their vehicles were navigating once they left the depot. They needed evidence their drivers could stand behind, and a way to coach staff constructively. And they wanted it all in one place.

An initial trial with Samsara opened up all these possibilities at once. AI Dash Cams kept watch over the roads, surfacing unsafe behaviours and creating an evidence trail for immediate retrieval in case of incidents. Live data from inside the cab feeds into automated workflows that help Paul and his team build a proactive safety culture, based on personalised, empathetic coaching for drivers in need. 

In just two years, Drainline’s total incurred costs fell from £141,000 to £38,000, a 73% reduction, and the company earned BSI ISO 39001 certification, the internationally recognised standard in road traffic safety management.

AI Dashcams

Winning drivers’ trust and making accidents a rarity

The team used Samsara AI Dash Cams to stamp out their high rate of accidents. Between 2023 and 2025, Drainline cut total incurred costs by 73% and reduced accident frequency by 75%.

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Een uitleg over AI-dashcams
Vehicle Gateways and Fleet Telematics

Slashing per-claim costs with same-day incident reporting

Whereas paper forms once sat unactioned for days, the compliance team now receives instant notifications the moment an incident occurs. This fast feedback loop wipes out the delays in reporting incidents that previously cost Drainline an extra £4,410 per claim. With reports within the hour, Drainline's underwriter takes control of a claim before other costs can escalate.

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Five Drainline workers in orange vests and hard hats stand beside a fleet of white Drainline service trucks in a parking lot.
Connected Workflows

Achieving BSI ISO 39001 certification and reshaping the insurer relationship

Drainline uses Samsara as an operational nervous system, building custom workflows that route live data to the different limbs of the company. Teams have the information they need to set accurate benchmarks, improve driver coaching and standardise compliance processes. 

In 2025, this cohesive governance model earned Drainline the BSI ISO 39001 certification, the international standard for road traffic safety management. It also paid off at their year-five insurance renewal.

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Three Drainline workers in hi-vis gear and hard hats stand beside a white Drainline DAF tanker truck on a residential street.
The Road Ahead with Samsara

A people-first safety ethos, built to scale

For Drainline, Samsara is a tool for building meaningful relationships with their workforce, rather than a surveillance mechanism. Management use AI safety scores to detect when drivers might be in need of help and attention. When they see a driver’s number dip, they initiate a supportive conversation to ask whether they are struggling with anything, or need support. Paul and Simon are embedding Samsara within a holistic model of company care that works at all paces of growth. To show their commitment to their people, they have reinvested money saved on insurance into pay rises for staff. 

Looking forward, Drainline is looking to use Samsara to protect their margins and service quality from rising fuel costs and a shortage of qualified HGV drivers. After reshaping both the company’s finances and its drivers’ habits in just two years, Paul feels confident that AI-based safety technology can help Drainline steer a path through a tough economic climate.

Supporting our drivers following an incident before we put them back behind the wheel is key, that's what separates a business like ours.

Paul Monck, SHEQ Director, Drainline Southern Ltd

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