Knowing that victory would guarantee a place in the next round alongside Brazil, Team GB began brightly, creating several chances to break the deadlock, and eventually claimed an early lead through Stoney after 18 minutes.
The team captain, a veteran of two FIFA Women’s World Cups™ with England, had a simple finish from two yards out after a deep delivery from the left hand side to put the hosts in front.
Fans at the Millennium Stadium did not have to wait long for a second goal either, with Everton midfielder Scott doubling Great Britain’s advantage with a sumptuous team goal.
Kelly Smith found Scottish star Kim Little free in the Cameroon penalty area and the latter produced a sensational flick with the outside of her foot to perfectly set up Scott, who made no mistake with a side-footed finish.
As the half wore on, Team GB could have added to their lead. Smith went close with a free-kick, while Cameroon goalkeeper Annette Ngo Ndom was tested twice, first by Little then by the match-winner on Day 1, Houghton.
The two combined to present Little with a chance that Ngo Ndom was equal to before Houghton sent a far-post header towards goal which the ‘keeper pushed onto the post and away.
With their two-goal cushion in place, Great Britain dictated the play in a second half of few opportunities. Anita Asante saw an effort cleared off the line by Bibi Medoua and Little again worked Ngo Ndom before Houghton iced the cake in the 82nd minute.
Little was involved again and, after failing to work space for a shot of her own, set up Houghton to drill a precise finish into the corner and ensure that the hosts will be among the eight teams taking part in the quarter-finals.