I have a one day/one night stop in London on business - as I have never been and its such a short time I will be there, any suggestions on what I must see while I am there? Not sure when I'll get back there so want to do at least one cool thing if possible more.
I"d say walk across Abbey Road. That or walk along the Thames to take in a little of everything.
I would recommend starting at Parliament, take photo ops of Westminster Abbey and Big Ben. Hop on riverboat from Parliament to The Tower of London, really nice views along the way, (You may not have time to see St. Paul's Cathedral up close but you will see the building from the Thames). Get off the boat at the Tower landing and definately visit the Tower of London, (buy a ticket in advance to avoid the queue!) More photo ops of the White Tower and the Tower Bridge. Easily doable in one day and you will catch a sense of the city.
Buy a bus and tube day pass for zone 1. Go from attraction to attraction, stopping for a coffee or a drink near each one. See as many as u can comfortably fit in.
Buckingham palace, Tower of London, Big Ben......
I'd say get the tube to Leicester Square station and from there you can walk to many of the London sights: Leiceseter Square, then south to Trafalgar square, then to Buckingham palace and then through the parks to Parliamnent, Big Ben and the London Eye. It's the route I always take friends when they visit
As for at night, there's lots of cool clubs and bars in east London, try round Old Street and Angel Stations. If you're here on a Saturday night and like modern art, the Tate gallery is open until 10pm.
There are at least 2 good tourist bus companies in London that have great hop on- hop off tours. You could get a day pass and just sit on the bus and take in the sights and get off if you see anything that sparks your interest...
Following on the tour bus - one is called the Original Tour Bus - you catch it at Haymarket(get off at the Picadilly Circus Tube Stop) and costs £19 the ticket is valid for 24 hours and it also includes a choice of 2 Thames River cruises which takes you as far as Grenwich - should you wish.
If you are in the city on business though l doubt you will have that much time to sight see as your business meetings will dictate your itinerary. So as others suggest you should decide what you wish to see and go for it.
London is really easy to navigate yourself around and the public transport is excellent.
OR you could go shopping - Regent Street, Oxford Street, Carnaby Street or Covent Gardens all being great areas to splash the cash! AND the sales are on - well they were when l was there last week!
You could maybe catch a show if you are into that - stop off at the last minute Ticket Booth in Leicester Square (TKTS - really obvious!) which is a great way to spend an evening!
The Heathrow Express will get you into London Paddington in 15mins - it costs approx £30 return - as your on business you can put it through on expenses! This will help you cut down on time wastage as you have so little time!
If l can help in any other way please ask!
Tube to Piccadilly Circus direct from Heathrow.
From there, you can walk to a huge number of London attractions, parks, shopping precints, etc. Forget stuffing around with public transport, you don't really have the time.
I agree with Cpt_Smooth. Get the tube to Leicester Square. As well as the places he mentioned there are also Soho and Covent garden close by.