Smith began his sales career at R Pochin and Sons, now known as Pochin, a plumbing and heating distributor in Leicestershire. Demonstrating a natural talent for sales and a deep understanding of customer needs, he worked at the same premises for over 18 years, beginning in 1981, even as ownership changed hands. Another notable period of his pre-SBS career was his tenure as a sales manager for PTS in the East Midlands region.

In 1999, Smith joined Smith Brothers as a sales manager, bringing with him experience from the plumbing and heating sector. His aptitude for numbers, a trait inherited from his late father, John Smith, quickly earned him recognition from senior members within the business. In 2005, Tony became sales director, where he set out to inspire the staff, driven by the SBS ethos of staff, stock, and service. In addition to focusing on sales, he served as the Midlands director, making decisions for six of the branches. His dedication was instrumental in expanding the business and branch network from three Midlands-based branches to twenty-one across the UK. He also plays a role in maintaining strong relationships with the supply chain, ensuring the best products and services were offered to customers.

Outside of his professional life, Smith is the captain of the over-60s Leicestershire table tennis team. Under his leadership, the team reached the top of the Premier Division, boasting an impressive track record of winning all but one of their matches over the last three years. He is also a world-ranked pinball player with the International Flipper Pinball Association, participating in tournaments to earn ranking points.