Nigeria, July 3 -- Nigeria's biggest lender by market value GTCO is pursuing a secondary listing in London, aimed at boosting its potential for tapping international markets for additional capital, while improving the accessibility of its shares to investors abroad.

The financial institution's history with the UK equity market reaches back to 2007, when GTB, its commercial banking arm, conducted a global depository receipt (GDR) offer of $750 million.

The securities were later admitted to the main market of the London Stock Exchange as the first of its kind by an African bank and a Nigerian company, with JP Morgan as the depositary bank.

This time around, the corporation is taking its ambition beyond what GDRs offers, hoping that a pro...