Dr Julian Lewis: What assessment he [the Prime Minister] has made of the operation of the systems for electing members of the Scottish Parliament and Welsh Assembly?

[SUPPLEMENTARY:] Is it not blindingly obvious, even to the Prime Minister, that what proportional representation did in Scotland and in Wales was, as usual, to deprive the winning party of a working majority and force it into coalition with a party that came not even second or third, but fourth – namely, the Liberal party? Will he now assure the House once and for all that that distorting and undemocratic system of proportional representation will never be used for Westminster parliamentary elections?