Edwards fired an impressive 4-under-par, 68, at Hillside for a one stroke lead over Spain's, Adrian Otaegui, who carded a 3-under-par for the low round at Hesketh. Otaegui is the 2010 British Boy's champion and the 18-year-old was the only player to break 70 on a difficult opening day at Hesketh.
The second-best round of the day at Hillside was signed for by England's Gregory Eason. The only player, apart from Edwards, to break par at a course described by Greg Norman as having the best back nine in Britain.
Drewitt sits comfortably inside the desired the top 64 players and ties qualifying for the match-play stage which will be determined following Tuesday's second round.
Bryden MacPherson is the next best Australian after opening with a 4-over-par, 75, at Hesketh to be in a tie for 76th position.
Current Australian Amateur champion, Matt Stieger, will need to get his game going in second round to survive these championships after opening with a 5-over-par, 77, at Hillside, which is considered by the majority of this week's field as the harder layout of the two qualification courses.
Stieger is presently in a tie for 111th position along with fellow countryman, Kalem Richardson, with the Tasmanian firing an opening 77 also at Hillside.
In a perspective as to the two layouts and where the Australians are placed, two of the championship favourites Tom Lewis and Jack Senior, are also in a tie for 111th position after the Englishmen opened with rounds of 76 at Hesketh.
Ryan McCarthy opened with an 80 at Hillside and will need to improve on his 209th position to make the match play segment of these championships.
As for the New Zealanders, this British Amateur is shaping up nicely.
Edwards, who won the Waikato Stroke Play title in 2010, is presently a top the leader board and was one of only two golfers to shoot under par at Hillside. Ben Campbell also opened strongly with a 1-over-par 73 at Hillside.
If any of them win they will be the first New Zealand male golfer to win the British Amateur that dates back to the first championship played at St Andrews in 1886.
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