The 21-year-old made a special return to his boyhood pool on Tuesday night, a month after he reached the 200 metre breaststroke final at the Aquatics Centre.
Speaking exclusively to the News, he said: "I learnt a lot when I was at Bracknell and I've still got some great friends here.
"Some of the guys I used to train with are still around and it's just great to be back.
"I owe it to the club to give something in return and really support and promote the club from now on."
* FOR MORE ON ANDREW WILLIS' VISIT TO BRACKNELL & WOKINGHAM SWIMMING CLUB PICK UP THE NEWS.