The Series 3 Jaguar E-Type is a car that has been somewhat lost to history. The original E-Type is regarded as one of the most beautiful cars ever, but the Series 3? Not so much.

That makes it a prime candidate for restomoding, with it being less sacrificial to modify and modernise the ugly duckling of the E-Type family.

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This particular model – a 1974 example – has undergone a 3,000-hour restoration by E-Type UK. The restoration was commissioned by a client overseas, who briefed the E-Type specialists to not only restore the car to its former glory, but tailor it to his exact tastes and specifications with a host of unique upgrades.

E-Type UK undertook an extensive consultation process with the client. It rebuilt and reworked the original 5.3-litre V12, creating a totally bespoke downdraft fuel injection system for the car with Jenvy throttle bodies, Emerald ECU and full custom wiring loom. The engine's capacity was increased to 6.1-litres as well and it now produces 284bhp.

E-Type UK Jaguar S3 V12

The car also has an impressive custom 12-branch stainless steel exhaust system, strengthened sills, bespoke extended louvres added to the bonnet and additional air ducting to help with the additional performance. There's also a sports steering, rack adjustable suspension with sports torsion bars all round, and 4-pot AP Racing brakes with grooved vented disks to the front.

The original gearbox is out, replaced with a new five-speed unit crafted from aerospace-grade aluminium with new bespoke ratios to handle the upgrades to the car. One-off 62 spoke 16-inch Turino wire wheels complete the car's exterior.

E-Type UK Jaguar S3 V12

Inside, the car has a completely bespoke interior, with a new leather trim, lowered custom seats (complete with seat heating) that started life in an XJS. As well as the heat heating, other modern touches on the interior include iPod and Bluetooth connected surround sound, LED lighting, and air conditioning. As well, there's Dynamat sound deadening beneath the interior.

Following the success of this first commission, E-Type UK is now accepting commissions for similar restomod projects.

Gallery: Jaguar E-Type V12 restomod