To take one group as an example, if you look at staff who are on research-only contracts, 27% are from the European Union. About 8% of them earn less than £30,000. It is not a huge proportion—those are probably people who are very early in their research careers—but it would none the less be a loss to the UK, if you imagine that those people might otherwise have stayed and made their careers with us. Although numerically it may not seem a significant proportion compared with technicians where the proportion is 63%, it should still be a matter of concern.
The other thing, which is perhaps not a matter for this Committee, is that we do well in competitive grant competitions—for example, in competitions for European Research Council funds. I think more than half those awardees are not actually from the UK, but are European nationals who have decided either to bring their grant to the UK or apply from the UK for that grant. If we lost those individuals—if they decided to apply for those same grants from a German or French institution—it would diminish our research base. So it is not necessarily just a matter of the numbers of individuals who might not be able to get visas. There is a knock-on effect that is quite difficult to predict.