Is the English singer Sir Cliff Richard still alive and is he still
active in shows etc.?

Hi jimen,

The answer to both questions is "yes."

A story on Yahoo! UK & Ireland News addressed this topic just ten days
ago.  The lead is "Pop veteran Sir Cliff Richard insists he has no
plans to hang up his microphone despite approaching retirement age."

http://uk.news.yahoo.com/050522/356/fjiyn.html

As that article notes, he just performed in the VE Day 60th
anniversary concert May 8th in London.

http://www.bbc.co.uk/london/yourlondon/veday/

His official website mentions the concert and plugs his latest album
on the front page.

http://www.cliffrichard.org/

So, at least as far as one can tell from the World Wide Web, Sir Cliff
is still alive and active.

--efn

Excellent reply!