Divide the target size by the target count and each company gets £875,000 before a single fee is charged [2], of which £575,000 is public [3], and that figure explains what the British Business Bank has bought rather better than the language from Zinc co-founder Ella Goldner about discoveries that never become companies [15]. £875,000 incorporates a business, licenses the university IP, pays two or three salaries and buys perhaps eighteen months of runway - enough to get a company started, but not enough to run a clinical trial or build a pilot plant. If Zinc holds back half the fund for follow-on cheques, which is what a careful early manager does, the first cheque drops to about £437,500 and 80 becomes a number contingent on how many of the first tranche earn a second [8].
The public share is the more interesting term. £46m of £70m is 65.7% [1], where the same programme took 50% of Longwall Venture Partners' £100m fund, a gap of 15.7 points [4], so the Bank is cornerstoning rather than co-investing, and the £70m target is itself 2.5 times the £28m Zinc closed with the programme's help in 2022 [5]. Assume, purely to see the shape of the thing, that Zinc holds a tenth of its winners through to exit: returning 3x on £70m means £210m of proceeds, which at that ownership implies roughly £2.1bn of aggregate exit value across the portfolio [7]. Eighty companies is a way of buying more tickets to exactly one of those.
The multiple is probably the wrong yardstick. The more useful test has nothing to do with it, because the Enterprise Capital Funds programme exists to get new UK managers to a close in the first place [3], and if the £46m is buying market structure then the number to follow is how many of Zinc's companies raise priced rounds led by investors with no public money behind them. Against the $11.3bn that went into UK deep tech in the first eight months of 2026, most of it to AI infrastructure and defence [12], £70m is about six-tenths of one percent even at a notional one-for-one on the currency [6], which puts this fund upstream of that capital rather than bidding against it, manufacturing deals for other people to price.
The hands-on promise that the Bank's senior investment manager Misodzi Mukungurutse names as Zinc's differentiator [16] also gets divided by eighty, and the failure mode is observable on a date. If, three years out, most of the eighty have not raised from capital with no public money in it, then £46m financed eighty incorporations and a venture-building services business with a fund wrapped around it.
