| Bidstack Group Plc | BIDS | £0.00 | £3mn |  | 
| Biffa Plc | BIFF | £4.10 | £1.3bn | FTSE 250 FTSE 350 | 
| BigDish Plc | DISH | £0.00 | £0mn |  | 
| Big Technologies Plc | BIG | £0.70 | £207mn |  | 
| Big Yellow Group plc | BYG | £11.36 | £2.2bn | FTSE 250 FTSE 350 CBOE 250 CBOE 350 | 
| Billington Holdings Plc | BILN | £3.05 | £41mn |  | 
| BioPharma Credit Plc | BPCR | £0.69 | £774mn |  | 
| Biotech Growth Trust | BIOG | £11.80 | £264mn |  | 
| Bioventix Plc | BVXP | £18.00 | £94mn |  | 
| Bisichi Plc | BISI | £0.88 | £9mn |  | 
| Blackfinch Spring VCT Plc | BFSP | £0.92 | £61mn |  | 
| BlackRock American Income Trust Plc | BRAI | £2.18 | £123mn |  | 
| BlackRock Energy and Resources Income Trust Plc | BERI | £1.44 | £160mn |  | 
| Blackrock Frontiers Investment Trust Plc | BRFI | £1.74 | £329mn |  | 
| BlackRock Greater Europe Investment Trust Plc | BRGE | £6.08 | £572mn |  | 
| BlackRock Income and Growth Investment Trust Plc | BRIG | £2.14 | £41mn |  | 
| BlackRock Asset Management Ireland Limited | IAEX | £85.70 | £603mn |  | 
| BlackRock Asset Management Ireland Limited | ISAG | £37.64 | £260mn |  | 
| BlackRock Asset Management Ireland Limited | IDAP | £20.82 | £389mn |  | 
| BlackRock Asset Management Ireland Limited | INXG | £11.99 | £612mn |  | 
| BlackRock Asset Management Ireland Limited | DBRC | £21.17 | £129mn |  | 
| BlackRock Asset Management Ireland Limited | IEBC | £107.24 | £8.9bn |  | 
| BlackRock Asset Management Ireland Limited | ISF | £9.51 | £13.6bn |  | 
| BlackRock Asset Management Ireland Limited | SLXX | £124.04 | £1.7bn |  | 
| BlackRock Asset Management Ireland Limited | EQDS | £5.73 | £818mn |  | 
| BlackRock Asset Management Ireland Limited | IWDG | £11.24 | £841mn |  | 
| BlackRock Asset Management Ireland Limited | IWDA | £98.52 | £94.1bn |  | 
| BlackRock Asset Management Ireland Limited | IEDY | £13.02 | £706mn |  | 
| BlackRock Asset Management Ireland Limited | IDVY | £19.77 | £965mn |  | 
| BlackRock Asset Management Ireland Limited | IPRP | £27.15 | £813mn |  |