All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ʻalayhi wa sallam, is His slave and Messenger.
Indeed you know the rights of parents. So, we advise you to be kind with them and deal honourably and patiently with them.
We perceive that you inform your mother of the life difficulties, in Western countries. Explain to her that there are a lot of temptations and attractions, which tempt you and every Muslim to forbidden matters.
You can tell her that marriage is meaningless if the wife is far from her husband. Therefore she should not delay bringing your wife in the appointed time i.e. (December).
We believe that if you can go to Pakistan, it might be a way to get rid of this problem. You may show your desire to be with your wife for a period then you may convince your mother of taking your wife with you.
In addition to being pious, and faithful to one's parents, one should be strong-willed when faced with some particular situations, especially if one fears committing what is forbidden.
You may tell your family that you will never return to temptations in Britain without your wife. Delaying till December is the mother's program and concerns her only. However, you can achieve what you want without hurting your parents. This could be possible only by having a strong will and by dealing wisely with them.
May Allaah help you and make your matters easy.
Allaah Knows best.