Early round (Oxford University Innovation calls it 'seed'; one outlet's headline calls it 'Series A')£1.5M · 2008
Follow-on round (label uncertain — inferred later 'Series B'-equivalent by sequence, not an explicit company label)just under £1 million (imprecise per source) · 2013-2014
BGF first investment (label uncertain — inferred later 'Series C'-equivalent by sequence)undisclosed · 2019
BGF follow-on£4.6M (~$5.36M) · 2020-01-08
Growth round (aggregators label this 'Series D')£25M (reported as $32.6-32.7M) · 2023-07-17
Equity financing, 1st closing$142M · 2025-02-24
Equity financing, 2nd private-placement closing (same program as above, incremental new money — not a fresh priced round)~$18M incremental (brought the financing program's cumulative total to $160M) · 2025-05-08