本人母亲想旅游签到爱尔兰 又想到英国看望朋友 办旅游到爱尔兰之后 是否能合法到英国如果没有英国签证？ 谢谢各位！
可以的，BIVS协议，一签两国通，无论得到英国还是爱尔兰短期访问签证都可以
Since 28 October 2014, under a new British Irish Visa Scheme (BIVS), visitors from China can travel freely within the Common Travel Area, (that is, Ireland and the UK, but not the Channel Islands and the Isle of Man), using either an Irish or UK short-stay visa endorsed with ‘BIVS’. Since 9 February 2015 the Scheme has been extended to visitors from India. The Scheme operates through a reciprocal visa arrangement, whereby Ireland and the UK recognise short-stay visas issued by the other for travel to their jurisdiction. The British Irish Visa Scheme will replace the Irish Visa Waiver Programme.