It is not BALPA's job to oversee training standards in the UK's flight schools. That is the CAA's job, and it is these days carried out on behalf of the European Joint Aviation Authority (JAA). Neither is it BALPA's job to illegally attempt to influence employers to take on exclusively, or a majority of, British pilots. Whether you like it or not, the UK is a full member of the EU and its employment legislation reflects the freedom of movement of labour that is enshrined in the EU's intent and reason for existence. If you wish to influence that, you have a vote.
Scroggs