Asking the hive-mind....

So, I know a fair few friends on here live, or have lived, in London.

I have been offered a job in London (starting October-ish, near Liverpool Street Station), and am trying to decide whether or not to accept.  I like having this decision/the offer, but am really not sure what to do.

My general thoughts on London can be summed up by "eww, expensive big city", but the job etc. looks good, and I know many people enjoy living there.

Any thoughts on things to consider appreciated....