As a brief reply to Mr Chan's questions:

"Does any kind soul here know:

(1) Which town (or county) is the Great Britain Museum
    located at?
(2) Is there a museum in London (UK) called Great England
    Museum?"

The museum he may be referring to is probably The British Museum,
which was founded in the Eighteenth Century, and is in London, which
is (of course) London (UK). There are many other important museums in
London, not least The Victoria and Albert, The Science Museum, The
Natural History Museum, The War Museum.

Chris Prior
Media Studies
University of Huddersfield