57. Business Systems International

Revenue: £74.4m

Founded in 1987, Business Systems International (BSI) supplies low-latency and mission-critical IT systems to a range of sectors globally. The company focuses on supporting complex infrastructure needs through its technical expertise and close relationships with major technology vendors.

BSI works closely with server, storage and networking manufacturers, with Nvidia as its largest component supplier. It is currently recognised as Dell’s EMEA Datacenter Partner of the Year. The company positions itself as a technology-led provider, aiming to give customers a performance advantage through infrastructure innovation.

In its latest financial year, BSI reported a 39% increase in turnover. This growth reflects the company’s strategic focus on artificial intelligence, with AI technologies being integrated into its offerings and internal operations. BSI anticipates continued growth over the next year, with new and existing AI-related projects expected to play a significant role.

The business remains debt-free and reports healthy cash reserves. It has adopted a conservative financial strategy, funding infrastructure and R&D initiatives through capital reserves rather than external borrowing.

BSI states that its approach supports long-term financial stability while enabling continued investment in infrastructure and expansion .