Agree with some of your points but this is just copium IMHO. Moslems in the UK has zero institutional power and most are assimilating. The only moslem of any note I can think of is Sadiq Khan but he even walks in LGBTQ parades, so he's a MINO (moslem-in-name-only).
Honestly, moslems in India seem much more radicalised to me. Far more religiously conservative too. And it doesn't help that India has several big moslem countries as neighbours whose TFR all exceed that of India's.
Indian muslims are indeed far more conservative than their UK counterparts. But that is to be expected with the near seven decades of VVIP treatment India (Congress) gave them.
Regarding Political Islam, what I meant is that when their population reaches a tipping a point, they'll start voting for muslim-centric party.
I don't know how the exact situation is in UK, but unlike Hindus whose votes can be split b/w Right Wing and Left Wing, majority of Muslim votes will always vote for The Muslim Party.
Even educated muslims sympathize with terrorists. Muslims as a community are easy to be radicalized. Blasphemy always works on them. They get riled up even on rumors of Mosque Attacks.
If Muslims reach say 15% or even 10% of population, they'll start punching above their weight and become a decisive force in the UK politics.
If that happens, the first victim will be Hindus, no doubt. As long as the establishment in UK isn't blind, they should prevent this. But only time will tell.