We learnt from question 118 of the way in which a syndicate of high-rate taxpayers meets to avoid paying tax.
People entitled to the high-rate care component are an example.
That would normally apply where a couple is working and therefore it would be rare that one of them would be a high-rate tax earner.
There is an even larger potential group of people who can also benefit from high-rate tax relief.
Rates are keenly topical because of their impact, in high-rate areas, on business and commerce and on domestic ratepayers.
The report also found examples of people entitled to the high-rate care component within disability living allowance who continued to receive review questionnaires.
They strike at the high-rate moneylenders, to whom many in the low income groups too often have to resort.
There could be a massive incentive for high-rate taxpayers to ensure that their money is in a credit union.