"(c) where the Commissioners consider it necessary in any particular case to vary the length of any period or the date on which any period begins or ends … they may allow or direct any person to make returns accordingly, whether or not the period so varied has ended;"
"… reg 25(1)(c) appears to apply to a case where the commissioners are going to 'allow or direct any person to make returns accordingly', and there was no question of that happening in the present case. [Counsel] prefers to put her case on reg 40(3) on the basis that reg 40 is concerned with payment of VAT, whereas reg 25 is concerned with returns."