Here is the spec below:

Engine 3.0-litre V6 diesel

Power 272hp

Max torque 590Nm at 1,600-2,400rpm

Top speed 155mph (regulated)

Fuel consumption 36.7mpg

CO2 emissions 204g/km (tax band K)

Transmission Seven-speed automatic

Standard features 18in alloys, cruise control, hill hold, parking guidance, automatic engine stop-start at standstill, ABS with brake assist, ESP with ASR, torque-vectoring braking, Airmatic suspension, Intelligent Light System, two-zone climate control, Attention Assist, remote-control COMAND multimedia system with 8in 3D sat-nav, radio, six-disc CD/ DVD changer and 7.2GB hard disk, electric glass sunroof, Pre-Safe anticipatory safety system, auto lights and wipers

Optional extras AMG Sports package (19in alloys, body styling, 350mm brakes and sports pedals), Eco-Power engine kit adding 37hp, Driving Assistance Package including blind-spot assist and Distronic radar proximity control, reversing camera, seating memory and comfort packages with massage function

OK OK i will put you out of your misery if you have not already guessed it is the Mercedes S Class.

• Coach/Bus —  cheap but you need to get to the terminal with your luggage and mix with other people
• Train/Tube – Again is cheap but you need to get to the station with your luggage and mix with other people
• Mini Cab – Can cost between £40-£60 and can be a hit or miss on what car you get and if the driver knows where he is going.
• Black Cab — Can cost between £50-£80 and again it is pot luck on the state of what cab you get.
• Stretch Limousine – Can be cost effective if you are in a party but on your own can be anything from £100 upwards depending on the size and model of vehicle .
• Chauffeur Driven Car – Can cost from £50 – £85 depending on the car and company but most cars will be clean and arrive on time.

When you look at all the modes of transport above yes they will all get you from London to Heathrow Airport but not all will offer you the same level of service and professionalism that you will receive when you book with a professional Limousine or chauffeur company.

When booking a chauffeur service from a reputable chauffeur company you should always expect your car to turn up at your home or work at the time you arranged and your chauffeur should look smart presentable and courteous he should offer to assist you with your luggage and assist you getting into your car by opening the door for you. When sitting in your car it should look clean and tidy and have refreshments tissues and something for you to read. Your driver should act professional at all times and drive you to your destination in a safe manner so you arrive relaxed and stress free.

So for the same price as a black cab you can make your dream come true and feel like a multi millionaire and arrive at your destination in style in a luxury Mercedes S Class from Berkeley Chauffeurs.