The VW-owned brand entered the UK market in 1985 and now has the largest UK range in its history with the Ibiza SC, Ibiza 5dr, Ibiza ST, Leon, Altea, Altea XL, Exeo, Exeo ST and Alhambra, and Seat UK chief Peter Wyhinny believes Seat will continue to grow.
He said: "It’s been an exciting, eventful and above all successful first 25 years for SEAT in the UK.
"With almost half a million cars registered here over that time, and with an exciting range of new models in the pipeline, I truly believe there’s never been a better time to be associated with the brand."
The manufacturer is on course to equal its best ever sales figures for the UK this year after selling 20,000 cars in the first seven months and enjoying a record-breaking 1.6 per cent share of the UK market.
The figures come despite a slow recovery from the global recession and gloomy predictions from industry experts after the UK scrappage scheme finished in the UK.
The success is based around a range of new models including the performance-orientated Seat Leon Cupra R and the new Ecomotive range of cars such as the Ibiza Ecomotive.
Seat has also pushed its UK fleet operations after signing a deal to supply 500 cars to UK energy company British Gas.
With a reputation for stylish, desirable cars and Volkswagen engineering under the bonnet, Seat cars are enjoying a growing reputation in the UK, and the brand is hoping to capitalise on it by sponsoring a number of events including pop singer Shakira’s European tour, football’s UEFA Europa League and the Red Bull Air Races.
Seat has also enjoyed 25 years of competing in the World Rallying and Word Touring Cars competitions.