Hi sir I have My friend in the UK I want to go...

If you have a friend who resides in the United Kingdom and would like to visit him, your friend can send you an invitation to visit the United Kingdom.
And then you shall check with the embassy of the UK in the UAE in order to
obtain a tourist visa.
The invitation that was sent to you by your friend
The following documents shall be attached to your application:
passport.
UAE residence.
Return flight booking.
Bank statement.
- A letter of the trip itinerary.
-International Health Insurance.
- A letter from the employer approving the trip.
- A letter from the employer on the date of employment, occupation and salary.
- Any documents proving the existence of fixed or movable property.
Your application will be considered and a decision will be made to accept or reject the application.
Here is the website of the Embassy of the UK in the UAE for more information:
Website of the Embassy of the UK in the UAE