Although born in India, Mills' formative years were spent in Barton-on-Humber and it was as a fresh faced youth that he joined the club at the beginning of the 20/21 season. Looks, however, can be deceiving, for his smiling countenance hid a character with plenty of battling qualities and by the end of the 21/22 season Mills had announced his impeccable claim to the goal scoring throne with devastating effect. In a three-week period covering November and December 1921, Mills scored 9 goals in 4 games with 4 goals against West Ham, 2 against Leeds and a hat-trick against Bradford P.A. The Tigers' fans had found an eminent replacement to their earlier 'goal machine' heroes and they warmly embraced his no nonsense style of play.
In keeping with his physical stature - he was somewhat small for a centre-forward - Mills had plenty of bustle to harry defenders and sharp shooting abilities that complemented the rest of his forwards. His star shone ever brighter and by the close of the 24/25 season his tally for that campaign stood at 29 goals in 41 games, more than half the team's total. It was evidence of how heavily he was relied on to provide the strike power, for no other player that season reached double figures.
It was an impressive record and whilst he made little of it, other clubs were beginning to take note and it wasn't long before offers were coming in for his services. Notts County finally acquired them and he spent a couple of seasons in their company before moving up a division to join Birmingham. His time there was brief and largely unproductive. As a consequence his departure was no great surprise but there was much happiness attached to it for the prodigal son returned to Anlaby Rd to conclude his League career although, in this second spell, his games were frequently in the half-back line rather than with the forwards.
His second spell with the club was more dramatic encapsulating a cracking FA Cup run in 1930, relegation and promotion. Throughout it Mills still maintained his ability to score goals. Even after his release he still continued to give goalkeepers a hard time in the Midland League with both Scunthorpe and Gainsborough before finally ending his days at his first club Barton.
His Tiger stats are impressive. His 'Dalmatian' of League goals contained 7 hat-tricks and his career tally with the Tigers stood as a record that was only to be beaten by another 'goal legend' - Chris Chilton. In his later years Mills spent 25 years as a policeman at Scunthorpe steelworks.