Triallist Leroy Griffiths partnered Carlos Hasselbaink in Norwich reserves' goalless draw with Stowmarket on 22nd July 2000. The then-Hampton & Richmond Borough striker began his career at Sutton United and had spells with Banstead and Corinthian Casuals before joining Hampton in February 2000. Despite impressing in the 3-1 reserve victory over Wimbledon on 25th July, Norwich City decided that neither Griffiths or Hasselbaink had what the club was looking for.

On 27th May 2001, the Non League Paper reported that Leroy was expected to sign for either QPR or Orient in a £40,000 deal. This followed a successful season in which he beat the 20 goal barrier for Hampton alongside Ryman Premier Division top marksman Craig Maskell. Leroy eventually joined QPR. He scored three times in 23 appearances for Rangers during the 2001/02 season but this was not seen as a high enough return at a time when clubs were cutting back on their playing squads in the wake of the ITV Digital fiasco.

In July 2002, a return to non-league football was mooted with speculation linking Leroy with Farnborough. This materialised on 5th August although as a three month loan deal. Leroy returned to Loftus Road at the beginning of November only to return to the Conference on 10th November 2002 with a loan deal at Margate.

QPR released Leroy from his contract at the beginning of July 2003 and immediatley Farnborough were linked with a move and invited him to join them for training. However he did not join Tommy Taylor's revolution at 'Boro and was expected to sign for Staines Town whose manager Steve Cordery he had played under whilst at Hampton & Richmond. However there was another twist and Leroy eventually signed for Boro again in August. However he moved the following month to join Grays Athletic on a 2year contract.

Although he scored 26 goals for Grays in 2004/5 as they stormed to the Conference South title and FA Trophy final, he was left out of the trophy side following disagreements with teammate Vill Powell and with the club over a new contract. In the summer of 2005, Leroy joined Fisher Athletic.

On 20th January 2006, Leroy joined Aldershot on loan and he began to repay their investment in him by scoring twice the following day.

After returning to Fisher Athletic, Leroy was loaned out to Grays Athletic on 16th February 2007.

Leroy left Fisher in the summer of 2007 and was part of a triple signing by Blue Square South side Haveant and Waterlooville on 23rd July 2007 along with former Tottenham youngster Jamie Slabber and Newport (IOW) winger Michael McEnery

Leroy then moved to Corinthan Casuals before signing for Lewes. In November 2007, he joined Gillingham on loan teaming up again with Mark Stimson his former Grays manager. This became a permanent transfer in January 2008

Leroy left Gillingham at the end of June 2008 and signed for Eastleigh. He moved to Staines Town in late August 2008. In January 2010, he signed for Sutton. After moving to Thurrock, he joined Leatherhead In October 2013,.