Why it is on record
The two flagship "new generation" banks; both listed on the London Stock Exchange (GTBank 2007 — first Nigerian company on the LSE main market via GDRs; Zenith 2013). GTCO's 2021 holding-company restructure and Zenith's scale records are documented in NGX filings.
Record held
First Nigerian LSE listings; consistently Africa's most profitable banks by ROE (documented rankings).