10(1)The back of the ballot papers shall be in the form set out in the Appendix.U.K.
(2)A ballot paper—
(a)shall be capable of being folded up,
(b)shall have a number printed on the back, and
(c)shall have attached a counterfoil with the same number printed on it.
(3)For the referendum in Scotland, the two forms of ballot paper shall be of different colours.