Having started his career in his local youth league in Sunderland, Grant Brown was spotted by a Leicester City scout and had his first trials with the Foxes just before his 13th birthday.

Signing schoolboy forms a couple of years later, Grant eventually joined Leicester as a 17-year-old, having opted to stay on at school to start his A Levels. At the end of his first season as a trainee, Grant was handed his League debut in place of the injured Russell Osman, impressing enough at Bradford City to keep his place for the next game.

Having signed professional forms in the summer of 1988, Grant found himself in the Leicester first team again at the beginning of the 1988/89
season, making 12 League appearances in the process, but soon found himself stuck in the reserves.

With Tony James being the subject of a £150,000 move from the Imps to Leicester shortly after the 1989/90 season kicked off, Imps' boss Colin Murphy arranged for Grant and team mate Paul Groves to come to Sincil Bank on loan.

Both players made their debuts in a 1-0 defeat at Wolves in the League Cup and after Groves returned to Leicester eight weeks later, Grant stayed on for an extra month with Murphy keen to make the deal permanent. Two months later Murphy, one of 11 managers who Grant went on to play under during his City career, got his man for a then Club record fee of £63,000 and for the next 12 seasons the name of Grant Brown would be an almost permanent fixture on the Imps' team sheet.

Having been awarded a testimonial in the 1999/2000 season, Grant was always nearing Tony Emery's all-time Club appearance record of 424 League and cup games and he overtook this milestone in an LDV Vans Trophy game against Morecambe in November 2000.

He had to wait a while to overtake Emery's Football League record, though, as a broken leg sustained just four games later at home to Hull City led to a nine-month lay-off before he returned to action. History was eventually made at York City's Bootham Crescent on Tuesday 26th March 2002 when Grant made his 403rd Football League appearance for the Imps, beating Emery's long-standing record in the process.

Grant went on to make a further four appearances for the Imps before he was released at the end of the 2001/02 season with the Club heading towards administration.

After spells in the non-League scene with Telford United, Alfreton Town and Grantham Town, Grant returned to Sincil Bank in August 2005 when he was appointed as Youth Team Coach following John Schofield's promotion to the first team set up.