From my reading of the guidance, I don’t think it will be as simple receiving 80% of the private fee income. It depends on the *proportion* of fee income to government funding; it wouldn’t be calculated on the actual private fee income. For example, if you received £1000 in private fees in February and £10000 in government funding the same month, you’d be eligible for 80% of 10% of your wage bill. Let’s say your wage bill was £5000 you’d be eligible for £400. But you’d be losing £1000 private fee income. So you’d be £600 worse off.
If you received 80% of the private fee income however, you’d be eligible for £800 ie double. And you’d only be £200 worse off.