UK small-cap RNS · 15 Sep 2026

The key announcements of UK small & mid caps under £2bn on 15 Sep 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
15 Sep	Gear4music (Holdings) G4M	£49m	Holding	Holding(s) in Company
15 Sep	Cerillion CER	£207m	Holding	Holding(s) in Company
15 Sep	B.P. Marsh & Partners BPM	£245m	Holding	Holding(s) in Company
15 Sep	Great Portland Estates GPE	£1,326m	Holding	Holding(s) in Company
15 Sep	Severfield SFR	£112m	Holding	Holding(s) in Company
15 Sep	Costain Group COST	£651m	Holding	Holding(s) in Company
15 Sep	IG Design Group IGR	£80m	Holding	Holding(s) in Company
15 Sep	Knights Group Holdings KGH	£142m	Holding	Holding(s) in Company
15 Sep	NCC Group NCC	£250m	Holding	Holding(s) in Company
15 Sep	Frontier Developments FDEV	£180m	Holding	Holding(s) in Company
15 Sep	CMC Markets CMCX	£1,877m	Holding	Holding(s) in Company
15 Sep	United Oil & Gas UOG	£10m	Holding	Holding(s) in Company
15 Sep	Card Factory CARD	£296m	Holding	Holding(s) in Company
15 Sep	Flowtech Fluidpower FLO	£52m	Holding	Holding(s) in Company
15 Sep	Dialight DIA	£213m	Holding	Holding(s) in Company
15 Sep	Star Energy Group Plc STAR	£40m	Holding	Holding(s) in Company
15 Sep	Coro Energy CORO	£3.1m	Overhang	Holding(s) in Company
15 Sep	Costain Group COST	£651m	Holding	Holding(s) in Company