Porotech Secures £1.5m Series B to Advance MicroLED Display Technology

Cambridge-based microdisplay pioneer Poro Technologies Ltd, trading as Porotech, has closed a £1.5m Series B funding round. The latest capital injection brings the company's post-money valuation to an estimated £135.8m. The allotment was completed on 6 March 2026, with the official filing registered today.

Incorporated in April 2018 as a spin-out from the University of Cambridge's Centre for Gallium Nitride, Porotech specialises in the development of high-performance microLED displays. The company addresses a critical bottleneck in the augmented reality, virtual reality, and wearable technology markets: the difficulty of manufacturing bright, efficient, and cost-effective microdisplays at scale.

Traditionally, creating full-colour microLED displays required mixing multiple material systems. This is a complex process that makes final products prohibitively expensive for the mass market. Furthermore, the performance of conventional microLEDs typically deteriorates as the device size shrinks. Porotech solves this through its proprietary porous gallium nitride semiconductor material, dubbed PoroGaN. This breakthrough allows the company to deliver monochrome and full-colour displays on a single indium gallium nitride material system. The result is a display that achieves the brightness, efficiency, and resolution needed for high-quality image projection, even in bright daylight.

Operating with a team of 29 employees according to its latest accounts, Porotech has steadily built its commercial and technical foundation. This £1.5m Series B round follows a trajectory of significant backing. The company previously raised a £3m Seed round in June 2021, led by Speedinvest with participation from IQ Capital, Cambridge Enterprise, and Martlet Capital. This was followed by a substantial Series A in February 2022 of approximately £15m, led by Ameba Capital, which was earmarked to accelerate global expansion and the mass production of its microLED products.

While the £1.5m Series B is notably smaller in primary capital than its Series A, the £135.8m post-money valuation underscores significant enterprise value growth and sustained investor confidence in Porotech's underlying intellectual property.

Porotech's latest funding aligns with broader trends in the UK's deep tech and hardware sectors. According to recent industry data, the UK deep tech sector remains highly resilient, raising approximately £4.6bn in 2025 and accounting for nearly a third of all UK venture capital funding. The UK is now recognised as the world's third-largest deep tech hub.

However, the landscape is experiencing a structural shift. While late-stage capital has remained relatively robust, overall deal volumes have contracted as investors prioritise high-conviction portfolio support over growth-stage risk. Furthermore, the geographical distribution of capital remains heavily concentrated. London continues to capture the lion's share of funding at 78 percent, but Cambridge maintains its position as the UK's second most prominent tech hub, contributing 7 percent of total funding. Porotech's continued growth highlights the critical role of university spin-outs in anchoring regional innovation clusters outside the capital.

As the demand for augmented reality headsets, smartwatches, and next-generation televisions continues to accelerate, the need for scalable, single-material microLED solutions is becoming increasingly acute. With its Series B funding secured and a robust valuation, Porotech is well-positioned to continue commercialising its PoroGaN technology and cementing its status within the global display market.