Sounds like a good idea, going by the headline:
[The measure is designed to make it easier for heads to sack teachers who are
members of the British National Party or those with extremist Islamic beliefs.]
[The guidelines direct staff ‘not to undermine fundamental British values,
including democracy, the rule of law, individual liberty and mutual respect,
and tolerance of those with different faiths and beliefs’.]
Source: "Indian Express"
I suspect that the measure will be targeted more at members of the BNP (or EDL?) than those with "extremist" islamic beliefs, as islamic belief is inherently "extremist", going by the Koran and the recited statements of "Allah".