"All UK retailers were notified of their initial day one Wii allocations in October 2006, some six to eight weeks before launch. Nintendo delivered exactly what we said we would to retailers for day one and in many instances over delivered against the initial numbers retailers were expecting." a spokesperson said.
The spokesperson also added: "Nintendo made multiple and regular deliveries to retailers across the UK in the days following launch to try and meet the huge demand for Wii as much as possible."
Source:
GamesIndustry.biz