The phrase "all of former" is not correct in written English.
It seems to be an incomplete expression and lacks clarity. An example could be: "All of former President's policies were reviewed."
Alternatives: "all of the previous" or "all of the former".
Kosovo's Trepca mines produced more than half the lead and zinc in all of former Yugoslavia.
Until the Bosnian war of 1992-95, Mostar was probably the most ethnically integrated city in all of former Yugoslavia.
May's small parliamentary majority will come under pressure, not least from the many enemies she made by purging all of former prime minister David Cameron's allies from office.
Ms. Otunbayeva has vowed to step down at the end of the year, making her the first leader in Kyrgyzstan, and in all of former Soviet Central Asia for that matter, to leave power voluntarily since the Soviet collapse.
Gershom Gorenberg puts the post-1967 issue with great clarity in his fine book, "The Unmaking of Israel": "If Israel really believed that the territorial division created by the 1949 armistice was null and void, it could have asserted its sovereignty in all of former Palestine — and granted the vote and other democratic rights to all inhabitants".
The United Nations war crimes tribunal in The Hague, charged with investigating allegations of war crimes in all of former Yugoslavia, has sent investigators to Macedonia to decide whether to begin a full investigation into what happened in Ljuboten and who might be responsible.
Out of all the thousands of former convicts & treated addicts who are looking for jobs, they've been able to place only a small percentage.
Before the 1990s, the study found, all sorts of former clerks served in the government under all sorts of administrations.
RECALL ITS FORMER GLORY Meal With All Embellishments of Former Times is Served in Bare Surroundings.
All names of former victims of trafficking have been altered for their own protection.
The new interim Government has nationalized all properties of former President Jean-Claude Duvalier in Haiti.
