Where to find UK sector information

Hi all,

Where can I find information about UK sectors online?
Specifically ... a list of all sectors in the UK and what is hot and what is not at any time.

Some advice recommends shorting poorer staocks in the worst performing sectors or going long in string stocks in well-performing sectors...

But ... how can one find out what these sectors are (and what stocks comprise them) at any given time?

Thanks a lot in advance.

digitallook.com