Salam,
u people forgot a very imp n esteemed name that is former CJP justice M.R. Kiani.He was an ICS n opted CSP after partition and later on opted higher judiciary (as this was an option in those days for CSP's who had at least 10 year service in CSP and had served 3 years min as a District Judge).and one correction GIK never served as a Naib Tehsildar. He had joined PCS of NWFP in the early 1940's and started his career as an Afsar-e-Maal and first class magistrate.after partition he was encadered to the Defunct CSP, as PCS officers had a quota in it.
best regards

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