Cook was denied a title shot last year when Scott Harrison withdrew from their scheduled bout at short notice.
That name: Scott Harrison, the founder of the nonprofit, charity: water .
FORBES: Tapping the Well of Philanthropy: Scott Harrison and Charity Water
British and Commonwealth featherweight champion Scott Harrison retained his titles with a third round stoppage of Steve Robinson in Glasgow.
And tough Korean Injin Chi, the WBC title holder, is being tailed by Scotland's Scott Harrison, a proposition not for the faint-hearted.
McCullough, who has not fought since losing to Scott Harrison in March 2003, believes it could be the first step towards another crack at the big time.
He believes it's the biggest British heavyweight title fight in recent memory and without doubt a fine addition to the Ricky Hatton-Kostya Tszyu and Scott Harrison-Michael Brodie bills in June.
In doing so, he proved that nice guys can win, even in boxing, and he gave Scotland her best night in the sport since Scott Harrison reclaimed his WBO world featherweight title in 2003.
Domestic hope may rest instead on the smaller frames of Englishman Ricky Hatton, Welsh wonder Joe Calzaghe, Scotland's Scott Harrison and a pair of Irish Magees, all of whom are on the verge of significant title shots.
For his part, 27-year-old Simpson admitted he would not be taking Smith lightly, but added that he sees victory as an opportunity to step into the void in Scottish Boxing that was left by former World Champion Scott Harrison.
In October the 38-year-old Harrison knocked out Scott Belshaw to win the Prizefighter heavyweight tournament.
BBC: Audley Harrison faces Michael Sprott for European title
Mix well with two huge stars, Harrison Ford and Kristin Scott Thomas.
Barrett, the best of the lot and a worthy finalist after fine victories over Scott Gammer and Carl Baker, troubled Harrison with worrying regularity before getting caught with a sweet left.
James Harris nipped one back to trap Scott Newman leg before with the fifth ball of the home side's second innings, before David Harrison had Sam Robson caught at second slip by Jamie Dalrymple in the following over.
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