welcome to

SDI Group plc (formerly known as Scientific Digital Imaging plc)

Delivering Our Vision Of Strategic Growth

SDI designs and manufactures scientific products for use in applications including life sciences, healthcare, astronomy, consumer manufacturing and art conservation markets.

The Company continues to grow through its own technology advancements, as well as through pursuing strategic, complementary acquisitions.

investors section

SDI Share Price & Chart

SDI’s shares are listed on the AIM market of the London Stock Exchange under the SDI ticker. Check out the latest share price, review the accounts, and see our presentations.

our companies

SDI Portfolio of Companies

Astles Control Systems

Astles is a supplier of chemical dosing and control systems to different manufacturing industries including manufacturers of beverage cans, engineering and motor components, white goods, architectural aluminium and steel.


Sentek manufactures and markets off-the shelf and custom-made electrochemical sensors for water based applications. These sensors are used in laboratory analysis, in food, beverage and personal care manufacture, as well as the leisure industry.


Synoptics designs and manufactures scientific instruments based on digital imaging, for the life science research, microbiology and healthcare markets

Atik Cameras

Atik Cameras designs and manufactures highly sensitive cameras. These are marketed for life science and industrial applications under its Artemis brand and for deep-sky astronomy imaging as Atik cameras.

Applied Thermal Control

Applied Thermal Control designs and manufactures precision re-circulation chillers, coolers and heat exchangers used to control the thermal environment within a wide variety of applications including within the scientific instrument support market (including electron microscopes, X-ray, diffraction and mass spectrometers.

Fistreem International

Fistreem International designs and manufactures water purification products and vacuum ovens.

Thermal Exchange

Thermal Exchange manufactures and maintains heat exchangers, coolers and chillers to the Industrial, Medical and Scientific markets. The company designs and provides cooling solutions for it’s customers.

Graticules Optics

With a pedigree going back over 70 years, Graticules Optics is a proven world-class designer and manufacturer of precision micropattern products. Graticules Optics is unique in offering photolithographic products on glass, film and in metal foil, with the added bonus of coatings, cementing, mounting and small optical assembly.

MPB Industries

MPB designs, manufactures and sells a range of flowmeters and control instrumentation with applications in water treatment, power generation, gas and oil production, human medical anaesthesia, aviation, pharmaceutical, pollution control, scientific analysis, educational and many other areas.