Low budget trip

Hi I will be visiting London from the 17th till The 24th of May and will be traveling on a budget.

Could you make recommendations that can fit for a free or low budget nature?

Regards.

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Changing of the Guard is free
Walking around is free
The Markets are also free.

As for low budget, what's your budget per day (in £) after deducting for flights in/out and travel insurance?

Hostels for lodging: see www.hostelbookers.com (or www.hostelworld.com - but this one charges a booking fee)
For round London travel: see www.tfl.gov.uk. Check 'Fares and Payments' for oystercard to travel cheaply, the home page of the site to plan journeys.

You can also get a FREE Central London bus map at Victoria Train Station (but you have to ask for the free one, or they'll try to sell you one).
Instead of a London tour bus, get on a #11 bus. It travels through /past a lot of the same places as the ho-ho buses and by using your oyster card you can enjoy a whole day's sightseeing very cheaply.
Food & drink: check out the supermarkets for cheap sandwiches, or ingeredients to cook at your hostel. Pret a Manger also has decent sandwiches at an ok price. Buy a bottle of water at a supermarket and refill it - all tap water in London is safe to drink - or bring your own bottle with you.
Restaurants have to put their menu outside so you can see how much you're paying before you go in.

Brick Lane at lunch time has bargain prices on Indian food (plus, it's nicer at lunch time than in the evening when things get very busy.)
Museums and art galleries Most are free. St Paul's Cathedral is free after 4.15pm (otherwise it costs an arm and a leg)
Changing of the Guard at Buckingham Palace doesn't happen every day. Changing of the Horseguard does - and is much more colourful. Same time of day (11.30 -ish). Enter from Whitehall, through the archway that's guarded by a couple of them. (On the #11 bus route)
The South Bank is a very nice walk - from the Royal Festival Hall to Tower Bridge. Cross over the footbridge down the hill from Charing Cross train station. At the Tower Bridge end you'll find Borough Market, which has interesting food.

Knownothing - Poona isn't from the USA. Do you get a commission for recommending this item?

Some excellent replies above.
There are a few guides that can be picked up along Oxford Street and surrounding areas tht promote free sites to visit. There is also an AA book called '500 Free days Out' that has 20 or so places in London worth checking out.
Get a travelcard for the day and then you can get on and off as many trains and red buses as you like for one price. I think it's about £8 nowadays. Eating cheap is easy, as long as you use markets and shops, thus avoiding restaurants and overpriced cafes.

Oyster is better than travelcard, Lenny.

mothercourage: I have heard this, but never used one. I just turn up in London for the day (maybe 4-5 times a year) and buy a travel card.
I really do need to learn about the Oyster Card.
Educate me please. How do prices compare between the 2 for a non-regular like me?

Lenny , if you're over 60 no problem - just use your Freedom card on the buses all day.
We Londoners are able to use ours on the tube and overground (trains) as well, but I don't know about you out-of-towners.
Whatever - all the info (about oyster card if you need one) is available on the website I gave and you really should acquaint yourself with it because it's just BRILL for finding your way around London. Even as a Londoner I learn new routes every week .
Go to www.tfl.gov.uk ...

If you happen to go to the Natural History Museum, try the cafe by the Exhibition Road entrance (not the 'main' entrance). I found the food there really tasty, and excellent value for money with £10 buying me a sandwich/wrap/slice of quiche, a big portion of salad (not your run of the mill lettuce, cucumber, tomato either), a drink and a slice of cake. Really good in London!!

Good value for London - but not budget eating, either.
If I was spending £10 on a meal I'd want it to be rather more substantial than that.

Me too. There's a Tesco Metro (or Express) close to the Natural History Museum that will sell you a lot more than that, with a can of good beer too and change left over.

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@#11: Are you stating that Hackney is in one of London's most interesting areas, or am I misreading what you've written?

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Here is one of my most up and coming interesting and very cultural stars of today's East End..
On a budget too:

http://m.youtube.com/watch?v=ETSl8gWsFZ0

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