I am not surprised to see what is happening in UK. Predicated on a religious faith, one can easily conclude that Christianity is taking a deep dive whereas Islamization (not Muslims) is flourishing all over the world. It is due to multifaceted reasons, for example, their indoctrination about anti-family planning, regular and disciplined frequency to visit mosques, philosophy of converting non-Muslims and, of course, reinforced it by ingrained element of jihadism. All these factors are leading to the spread of Islamization all over the world.
As far as UK is concerned, it is the liberal policy of the government which is helpful in bringing Islamization to the forefront. Muslims have realized (worldwide) how to exploit the liberal tenets of democratic constitution. So, one should not blame the Muslims if they are building more mosques in the UK, one should rather blame the liberal society which allows the Muslims to achieve this long term objective. I believe, unless some magic happens, the time is in favor of Muslims. They can wait as long as it takes to accomplish their long term objective which is to establish Sharia Law worldwide. White people do not have the backbone to face Muslim onslaught on a worldwide basis. Hence, the decline of the former. In UK, the Mayor of London is a Muslim who is very supportive of Muslim community and religion, and when he was visiting Chicago about a year ago, he openly addressed the Muslim community that they do not have to assimilate themselves into the non-Muslim community. He even confronted the Queen of London on a few issues. So, to make long story short, my opinion is that the time is not too far when UK along with other countries like Belgium, France and Holland etc. will be facing open Islamization - unless as I said above some magic happens.