I had a great experience delivering in the UK. The midwifery unit was ahmazing. They were so supportive and so nice. I had it all natural. Just air and gas..it was hard but nothing impossible. Being a doc I wouldnt advice you to deliver in pak even in pvt hospitals. Been there and witnessed deliveries paid a mint of money for and yet gone horrible. Also the post childbirth care isnt good either.
Secondly, you would have to go through naturalization process by applying via ukba and going through the hassle of application and all. But in the UK, you would just need to give about £30-40 and your baby would be a brit citizen.