I am trying to book an apartment in London and I am from London, but have lived abroad for 4 years. Even I as a native was taken aback by the number of scam websites in London. Some websites look very professional, until you look a little closer.
WARNING! Check the phone numbers, all central london landlords should have a phone number that is 0207 XXX or +44 207, anything different like +44 702 XXX is a phone number redirected anywhere in the world. If you cant get hold of the person renting the apartment move on to the next one.
Ask for the address of the apartment before you send any money.
Anyone mentioning Western Union - run a mile. Its all scams.
Here are just two of many, many fraudulent sites I found
TO NOT USE THESE WEBSITES THEY ARE SCAMS. a google search of them revealed nothing.
http://www.bayswater-flats.co.uk (BAYSWATER FLATS owner Richard Morris, very professional 'looking' web site)
http://www.londonleisurehomes.com (LONDON LEISURE HOMES, owner Bryan Macmillian)
Anyone not wanting to take cash payments is a fraudster.
There are many many scams on gumtree.com although there are good offers also here.
Look at many adverts before choosing an apartment. I became suspicious only when I saw the same photos of one apartment, listed at 2 different addresses!! BUYER BEWARE.