my true opinion. if the girl is from Mirpur side, dont bother, dont even think about it. but if the girl is from other side of Pakistan, then u can think about it. I would say dont follow ur parents, just talk to the girl and ask her true opinion. if she wants to get married some1 from pakistan and she doesnt have any problem with it then go for it. but remember, ur brother will come to england and its a totally different world and will be bit hard from him in the start and also for the girl aswell so have this in his mind to compromise but again u cant clap with one hand, some compromise has to come from her aswell. so its better to have some good talking sessions before getting engaged. so u both have idea about each other.
piece of advice: just dont only talk to the girl, talk to her family aswell, as many boys come here and they live with the girlz family and they make the boy like there servents and make them to work like dogs and pay full house bills and stuff. so talk to her family and have idea about there mentality and intentions. when he comes here then try to find his own space and live seperate with his wife not with her family by doing this he will have his self respect maintained.
worse case: worse case will be, if she is not happy with this wedding she will not say anything now but she will wait for him to come here. when he will be here she will create in-house problems for him and will not extend his visa after 2 years and he will have to go back after 2 years. so be strong