It's not likely Muslims will surpass or level the rest of the british population in the next decades, there's little to worry about - Additionally, the young are often rebellious so there's a higher chance british kids (Muslims) would leave the religion because of (1) secular education and science teaching (2) there's no penalty for apostasy in Britan (I think)
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you