During debates on this in the House of Lords last year, the magnificently-named Earl of Onslow had the ultimate put-down to those who wanted retain blasphemy laws:

‘[I]t has always struck me that if Jesus Christ exists, and if Jesus Christ in his Godlike form was capable of creating the universe, then he could quite easily hack the bit of left-wing obscurantism and b-mindedness that writes things such as Jerry Springer – The Opera. If he does not exist, nothing will happen; if he does exist, it is up to him to get hold of the chap who wrote it and make sure that he does time in the diabolical house of correction. The offence is unnecessary.’
Debate here

Hat tip: Peter Noorlander