where is the travel agent at london?

Answer 1

There are hundreds or even thousands of travel agents in London. Which one do you really want and for what. If for finding out about cheap fares to a particular country then all you have to do is search for CHEAP FARE LONDON and hundreds of travel agents websites will appear.

Here are some examples:
http://www.yell.com/super/travel+agent/london?sem=o&cam=london

http://uk.local.yahoo.com/search.html?w=uctid,fw,belongto&type=GugiXML&poi=London%2C+Greater+London&p=travel+agents

Be careful, though, do not pay money over the internet.

All the best!/

Answer 2

look for Thomas Cook.