The two-year-old standard poodle triumphed over six other best-in-group winners in the final event of the annual competition, which attracted more than 21,000 entrants from Britain and overseas.
Ricky and his handler, Jason Lynn, were given the nod by the best-in-show judge Jack Bispham after being assessed for overall health, condition, coat, character, temperament and movement.
Speaking immediately after the result was declared at Birmingham's National Exhibition Centre, Mr Lynn confirmed that Ricky would now be retired from competition in the UK.
Mr Lynn, from Preston, Lancashire, said: "I couldn't have asked for anything more.
"He gave an absolutely beautiful performance and I am so proud of him."
Mr Lynn, who co-owns and co-bred the champion animal, added: "He was top dog all breeds last year and we decided that this would be his last show - and he has ended it in the most wonderful way possible."