Fourteen healthtechs featured on the Sifted 100, a ranking of the fastest-growing tech companies in the UK and Ireland by historical revenue figures.
Buoyed by a $600m raise for London-based DeepMind spinout Isomorphic Labs, the country’s healthtech sector has raised a total of €1.4bn so far in 2025 — just under half the $3.2bn picked up across the whole of 2024.
Other sizable rounds this year include a $440m Series A from Verdiva Bio — a biotech developing GLP-1 meds, and clinical trials startup and highest-ranked healthtech Lindus Health’s $55m.
But which other healthtechs have been growing at pace over the past few years?
1/ Lindus Health
HQ: London
Two-year CAGR%: 494.61% (2022-24)
What it does: Lindus is building a platform to plan, monitor and analyse clinical trials for health and biotech companies. The startup counts Peter Thiel among its cap table and raised a $55m Series B in January, from investors including Balderton Capital, Creandum, Seedcamp, First Minute Capital and Visionaries Club.
2/ Healthtech-1
HQ: London
Two-year CAGR%: 339.62% (2021-2024)
What it does: Healthtech-1 is developing tech to automate admin in GP practices in the UK. The Monzo alumni-founded startup raised a $3.5m seed round in July featuring Y Combinator as it looked to commercialise its first product, a patient registration automation tool.
3/ Flo Health
HQ: London
Two-year CAGR%: 330.84% (2021-2023)
What it does: Flo has built an app that allows users to track period cycles and monitor symptoms, as well as providing them with tailored health insights and educational content around pregnancy and perimenopause.
The company made headlines in August following a $200m raise from US investor General Atlantic, which was the biggest ever for a purely digital femtech and saw it become Europe’s first unicorn in the sector.
Earlier this year, Flo told Sifted it was on the hunt for startups to acquire as it looked to broaden its offering.
4/ Scan.com
HQ: London
Two-year CAGR%: 319.06% (2022-2024)
What it does: Scan.com is a direct-to-consumer marketplace for self-pay scans, including MRIs, ultrasounds, CT and x-rays. The company counts Monzo-founder Tom Blomfield on its cap table and last raised in a $12m Series A in 2023.
5/ Bit Bio
HQ: Cambridge
Two-year CAGR%: 279.09% (2021-2023)
What it does: Bit Bio is building cell programming technology, which produces human cells for research and drug discovery. The startup has raised $225m since launching in 2016, but has recently been enduring a period of upheaval that’s seen a board reshuffle, staff layoffs and product lines dropped.
6/ Health-AI
HQ: Ipswich
Two-year CAGR%: 245.97% (2021-2024)
What it does: Health-AI is developing AI-powered solutions for patient care and healthcare operations. The startup remains one of the leanest operations on Sifted’s leaderboard, running with just two employees and £146k in total funding.
7/ Zoe Health
HQ: London
Two-year CAGR%: 235.3% (2021-2024)
What it does: Zoe sells microbiome testing kits and a monthly subscription to an app offering recipes, lifestyle and diet advice. It’s one of Europe’s best-funded direct-to-consumer healthtechs but has had an up and down 2024. It raised $15m in July but has also made two rounds of layoffs in 2024.
8/ Peppy Health
HQ: London
Two-year CAGR%: 184.19% (2021-2023)
What it does: Peppy Health is an employee benefits platform for gender-specific health issues and support, including menopause, fertility, men’s health and pregnancy. Fortunes have been mixed since the company raised a $45m Series B at the start of 2023, with Peppy making redundancies later that year as revenue growth slowed.
9/ Nuclera
HQ: Cambridge
Two-year CAGR%: 181.47% (2022-2024)
What it does: Nuclera prints proteins with its desktop bioprinter to make drug discovery more accessible. In October 2024, it raised a £57m Series C from investors including Cambridge Innovation Capital and angel investor Jonathan Milner.
10/ Blum Health
HQ: Birkenhead
Two-year CAGR%: 135.87% (2021-2024)
What it does: Blum Health develops software solutions for the healthcare sector, focusing on improving efficiency and service delivery.
Read the orginal article: https://sifted.eu/articles/uk-fastest-growing-healthtechs-2025/
