“(1) If HMRC think it right because of special circumstances, they may reduce a penalty under any paragraph of this Schedule. (2) In sub-paragraph (1) "special circumstances" does not include– (a) ability to pay, or (b) the fact that a potential loss of revenue from one taxpayer is balanced by a potential over-payment by another. (3) In sub-paragraph (1) the reference to reducing a penalty includes a reference to– (a) staying a penalty, and (b) agreeing a compromise in relation to proceedings for a penalty.”