Mr Cameron gave the family a large tapestry with an eagle and American flag design by the Rug Company, silver bracelets for daughters Sasha and Malia, and a "bone-shaped chew toy with United Kingdom flag", presumably for Bo, the family's four-year-old dog.
The highlight of his round was a stunning 207-yard approach shot on the 15th which landed four feet from the flag, giving him the chance to convert a simple eagle putt.
Webster moved alongside Manassero with a seven-under 64 which included a spectacular eagle at the par-five 13th, which saw his second shot from a fairway bunker strike the flag, leaving him with a six-foot putt for his three.