The 200bhp version of the 308 hatchback has been available to buy in Europe for over a year, but the French manufacturer had resisted releasing a model in the UK until now.
Hot hatches are notoriously popular in the UK, where models such as the powerful Ford Focus RS500 and the Seat Leon Cupra R dominate a competitive market.
The engine used in the Peugeot 308 GT is no stranger to UK shores. The 1.6-litre 200bhp powerplant mated to a six-speed gearbox is the same as the one used in the hugely popular Peugeot RCZ coupe.
The 308 GT is a solid all-rounder with a top speed of 140mph and a 0-62mph sprint time of 7.7 seconds. The petrol engine has been refined to offer an impressive 40.8mpg and low CO2 emissions of 159g/km.
The car has a five-star EuroNCAP rating and features six airbags, ABS and Electronic Brake Assist and Electronic Stability Control.
To differentiate the new Peugeot 308 GT from the standard 308 range, GT badges are displayed throughout and an exterior styling pack has been added to five it a sportier look.
The body has been lowered and several exterior features such as new front and rear bumper panels, 18" alloy wheels and twin chrome exhaust pipes and a rear spoiler have been added.
The most noticeable change is the new GT 200 sporty front grille, replacing the traditional Peugeot grille from the standard 308.
Inside, the car is suitably decked out with sports seats, leather sports steering wheel and aluminium pedals. Equipment includes climate control, CD player with MP3 compatibility and Bluetooth and dual climate control.
Electronic folding mirrors, front fog lights, automatic headlamps and wipers and a rear parking aid are all included in the specification.
The Peugeot 308 GT THP 200 is available in six different exterior body colours: Bianca White, Nera Black, Aluminium, Shark Grey, Ipanema Blue and Babylon Red, all with a Payerne black half leather interior trim.
The Peugeot 308 GT THP 200 is on sale this month from £21,995 and all orders delivered in July receive a free Nokia 5230 smartphone with satellite navigation and in-car mounting kit.