 a group of Liberal Democrat MPs are gearing up to rebel next week against a section of the government's finance bill which they believe gives a subsidy to the nuclear power industry.  The coalition agreement rules out any new subsidy for nuclear power, and backbenchers in the party believe such a measure would represent as great a breach of trust with voters as breaking their promise on tuition fees.  a large group of Lib Dems are concerned about clause 78 o 