The NHS Has a Staffing Problem Nobody Wants to Name
The UK's National Health Service spends 75 percent of its costs on staff. That's not a rounding error or a budget footnote—it's the entire operation. And when hospitals and GP practices suddenly need a doctor on shift tomorrow, they historically reach for the most expensive tool available: a recruitment agency. Those middlemen charge markups that can hit 30 or 40 percent of the shift rate, and they offer almost nothing in return beyond a phone call and an invoice.
Melissa Morris saw this from the inside. Before founding Network Locum in 2011, she'd worked as a McKinsey consultant and then as an NHS consultant. The dysfunction wasn't abstract to her. She watched hospital administrators spend hours acting as in-house recruiters—phoning around, cross-checking availability, chasing compliance paperwork—while permanent staff burned out covering gaps that no one could fill quickly enough.
Network Locum was her answer. A dual platform that combines workplace management software (SaaS) with a locum marketplace, designed to let clinics manage their own rosters and fill unfilled shifts without paying agency tolls.
The £5.3M Vote of Confidence
In July 2016, Network Locum closed a £5.3 million Series B round led by BGF Ventures. The timing mattered. The UK had just voted to leave the European Union three weeks earlier, and the venture capital conversation in London had shifted to one of hesitancy. BGF's founding partner Simon Calver was pointed about this: he framed the investment as evidence that the UK's tech investor network remained "ready and willing to commit to the best ideas and entrepreneurs."
That's investor-speak for "we're not panicking." But Calver's language also signaled that BGF saw something structurally durable in what Network Locum was building—a company whose value proposition didn't depend on macroeconomic tailwinds. The NHS staffing crisis isn't cyclical. It's embedded in the system.
Network Locum had previously raised £3.2 million from investors including Piton Capital, a marketplace-focused fund. The Series B brought in new capital but also maintained a key relationship, which suggests the earlier investor saw enough conviction in the model to re-up.
How the Platform Actually Works
The system is two things wearing one coat. On one side, it's workplace management software: hospitals and GP practices use it to manage their permanent staff rosters, handle compliance documentation, and track shift patterns. On the other side, it's a matching marketplace that fills gaps by pairing locum doctors with open shifts.
The matching itself runs on a range of signals. The platform factors in a doctor's location, whether they've previously worked at a particular hospital or surgery, their searching intent (what type of work they want), and preferences communicated to Network Locum's onboarding team. Morris described this layer as the difference between brute-force automation and something more intelligent—matching that fills substantially more shifts, faster, at lower cost.
Payment flows through the platform too. Locums get remitted fortnightly for completed shifts, which removes a significant administrative headache from clinic finance teams.
At the time of the Series B, the numbers were: 5,000 locums actively using the platform, 40,000 registered total, and approximately 1,200 paying customers. The company had started its sales push with GP surgeries, shorter sales cycles, faster feedback loops, and was beginning to move upmarket into hospitals. It had deployed in London, Manchester, and Birmingham, with contracts expected at "several major NHS hospitals and local authorities" later that year.
The company also reported that it had signed up 40 percent of GP practices in England and Wales. That penetration figure matters for a specific reason: Network Locum's business model charges hospitals and practices based on a percentage of locum hours booked. The more you use it, the more you pay. But Morris and her team consistently framed that percentage as significantly smaller than traditional agency fees. The economics only work if you can get the volume, and 40 percent penetration in England and Wales was proof the model had traction.
Doctor recruitment was another interesting signal. Early on, Network Locum used social media, specifically a Facebook advice-sharing forum, to attract locum doctors. But by mid-2016, 70 percent of new doctors arriving on the platform came through referrals from existing users. That organic referral rate is a quality proxy. Doctors talking to other doctors is a harder signal to manufacture than any ad campaign.
The Anti-Agency Positioning
Business Insider described Network Locum's RLocums acquisition (which followed shortly after the funding round) in "anti-agency" terms. That framing wasn't marketing spin, it was strategic. By absorbing a competing roster of 45,000 doctors, Network Locum wasn't just growing its supply pool. It was consolidating the alternative to agencies into a single technological platform rather than letting it fragment across multiple competing marketplaces.
The real competition wasn't another startup. It was the inertia of procurement teams who'd been phoning agencies for twenty years. Morris was direct about this in her TechCrunch interview: "Most of this work can be automated and when you add a layer of intelligence you can match clinical staff with shifts quickly, cheaply and fill substantially more shifts." The word "cheaply" was doing deliberate work. This was never about making hospital administrators feel clever about their software choices. It was about making the old way economically indefensible.
Hospitals retained "the final say" on hiring people they didn't work with regularly, and locums on the platform were fully vetted with a two-way feedback loop built in. Those details addressed the compliance anxiety that kept procurement teams loyal to agencies, even expensive ones. Agencies were expensive, but they bore the vetting risk. Network Locum absorbed that burden and made it a feature.
From Network Locum to Lantum
The 2016 round was an early chapter. By 2019, the company rebranded to Lantum. And in March 2022, Lantum raised $15 million led by Finch Capital, with participation from Piton Capital, Samos, and strategic backer Cedars-Sinai Hospital.
The numbers by then were a different order of magnitude. Lantum's platform covered 200,000 doctors, had facilitated five million shifts, and served 20 out of the NHS's 40 integrated care systems. That's not incremental growth from 2016, that's a company that used its dual SaaS-plus-marketplace architecture as a flywheel. More hospitals adopt the software. More locums join the marketplace. Better matching fills more shifts. More data improves the matching.
What's striking in retrospect is how legible the 2022 trajectory was from the 2016 position. The architecture was already in place. The referral-driven supply growth was already working. The compliance-first approach was already reducing friction for hospital procurement teams. The Series B wasn't a bet on an unproven idea. It was capital to remove the constraint of sales capacity so the platform could scale faster than its competition could react.
What This Tells Us About Healthtech Timing
There's a common assumption that healthtech startups fail because the market is too slow, too regulated, or too risk-averse. The Network Locum story complicates that narrative. The NHS was slow, regulated, and risk-averse in 2016. It's still those things in 2026. The difference wasn't regulatory change or a political shift toward innovation. It was a company that built a tool genuinely cheaper than the status quo, absorbed the compliance risk that kept buyers stuck, and then compounded a referral engine until procurement inertia became economically irrational.
The £5.3 million round was never the hard part. Building a product that made 30 percent agency markups look indefensible, that was the hard part. And once that existed, capital and customers followed, one referred doctor at a time.
