UK small-cap RNS · 21 May 2026

The key announcements of UK small & mid caps under £2bn on 21 May 2026 – situations they move are marked, with the share price since.

Key = all announcements except routine filings (voting rights, buybacks, holdings, director forms), plus director dealings and holdings that are part of a situation. Not investment advice.

Date	Company	Mcap ↕	Type	Announcement
21 May	Oxford Metrics OMG	£39m	Capital return	Completion of Buyback Programme Oxford Metrics, the smart sensing and measurement technology Group, is pleased to announce that it has completed its share buyback programme.
21 May	Glenveagh Properties (CDI) GLV	£978m	Overhang	Holding(s) in Company
21 May	Everyman Media Group EMAN	£47m	Insider conviction	Director/PDMR Shareholding
21 May	Staffline Group STAF	£45m	Insider conviction	Director/PDMR Shareholding
21 May	Advanced Medical Solutions Group AMS	£616m	Takeover target	Statement re Advanced Medical Solutions Group plc Fuller notes the recent announcement made by AMS and confirms that on 30 April 2026 it submitted an all-cash proposal for the entire issued and to be issued share capital of AMS.
21 May	IntegraFin Holding IHP	£1,217m	Insider conviction	Director/PDMR Shareholding
21 May	Henry Boot BOOT	£195m	New CEO / reset	Managing Director appointment at HBD Henry Boot, a company engaged in land promotion, property investment and development, and home building, today announces that Hamer Boot has been appointed as the new permanent Managing Director for HBD, the group's development division.
21 May	Newmark Security PLC NWT	£9.1m	Balance-sheet stress / refinancing	Full Year Trading Update ("Newmark", the "Company" or, together with its subsidiaries, the "Group")
21 May	Tungsten West TUN	£548m	Project milestones	Q1 2026 Project Funding and Debt Update Tungsten West (AIM:TUN), the mining company focused on restarting production at the Hemerdon tungsten and tin mine ("Hemerdon" or the "Project") in Devon, UK, is pleased to provide a Project Funding and debt update.
21 May	Trufin TRU	£54m	Disposal of a part (break-up)	Proposed disposal of Playstack Limited Proposed disposal of Playstack Limited and Notice of General Meeting
21 May	Seascape Energy Asia Plc SEA	£76m	Project milestones	Audited Full Year Results to 31 December 2025 Seascape Energy, an E&P company focused on Southeast Asia, is pleased to announce its full year results for the 12 months ended 31 December 2025.
21 May	Sabien Technology Group SNT	£0.9m	Disposal of a part (break-up)	Proposed Commercial Partnership & Investment Sabien Technology Group plc (AIM: SNT), the manufacturer and provider of energy reduction technologies, announces that, following a detailed review of the Company's long-term commercial strategy, the Company has entered into exclusive non-binding heads of …
21 May	Shuka Minerals SKA	£6.2m	Project milestones	High Grade Results from Diamond Drill at Kabwe High Grade Results from Maiden Diamond Drill Hole at Kabwe ('KBDD01')
21 May	Nexteq NXQ	£22m	Upgrade / downgrade cycle	Trading Update Nexteq plc (AIM: NXQ), a leading technology solutions provider to customers in selected industrial markets, today provides the following update on trading.
21 May	Hardide HDD	£94m	Segment turn	Interim Statement Interim Statement for the six months ended 31 March 2026
21 May	Robinson RBN	£19m	Upgrade / downgrade cycle	AGM Trading Statement Robinson plc ("Robinson", the "Company" or the "Group"; stock code: RBN), the custom manufacturer of plastic and paperboard packaging, is holding its Annual General Meeting today at 11:30am at the Peak Edge Hotel, Darley Road, Chesterfield S45 0LW.
21 May	Ashtead Technology Holdings AT.	£489m	Upgrade / downgrade cycle	AGM Trading Statement Ashtead Technology Holdings plc (LSE: AT.), a leading provider of subsea technology solutions to the global offshore energy sector, issues the following trading update ahead of its Annual General Meeting to be held at 10.00am today.