Lockett has suffered just one defeat in 29 bouts

"The WBU is a good, money-making crown, but I'm number-two contender for the WBO belt and that's my aim," he said.

"I've got the potential to follow Enzo Maccarinelli and Joe Calzaghe and win one of the four major world titles."

Cwmbran-man Lockett, 29, makes the second defence of his WBU crown against an as-yet unnamed opponent at Newport Sports Centre on Saturday, 18 November.

WALES' WORLD CHAMPIONS Percy Jones (World flyweight champion, 1914) Freddie Welsh (World lightweight champion, 1914-17) Jimmy Wilde (World flyweight champion, 1916-23) Howard Winstone (WBC featherweight champion, 1968) Steve Robinson (WBO featherweight champion, 1993-95) Robbie Regan (IBF flyweight champion, 1995, WBO bantamweight champion, 1996) Barry Jones (WBO super featherweight champion, 1997) Joe Calzaghe (WBO super middleweight champion, 1997-, IBF super middleweight champion 2006-) Enzo Maccarinelli (WBO cruiserweight champion, 2006-)

Bonymaen's Maccarinelli stepped up from being WBU cruiserweight champion to become WBO king, his first defence coming last Saturday against Mark Hobson.

Lockett's points win over Ryan Rhodes at the Millennium Stadium in July took his professional record to 28-1 (19 KOs).

A good display impressed boxing great Barry McGuigan, but the Irishman suggested that a European crown should be the limit of Lockett's ambition in a competitive world middleweight division.

"I understand what Barry was saying, but he also said that my power was world class," Lockett told BBC Sport Wales.

"I'm being built up now and will top the bill on home ground in Newport.

"It's onwards and upwards from here."

Bradley Pryce will make the second defence of his Commonwealth light middleweight title on the undercard.