Complex sentence: The British Association of International Mountain Leaders (BAIML) is the professional body which represents the increasing number of British International Mountain Leaders (IMLs) who work in the hills and mountains of their home country, the alpine regions and further afield.
Split into simpler sentences: The British Association of International Mountain Leaders (BAIML) is a professional association for those leading in mountains both in the United Kingdom and around the world. The group represents British International Mountain Leaders (IMLs) who work in the hills and mountains of their home country, the alpine regions and further afield.