You do not need any tests to extend the visa.

You will need Life in the UK test as well as B1 English test when applying for Indefinite Leave to Remain.

regards

Hi dear sir/madam 

My name is Adil khan

I came in this country 21/04/2013 on spouse visa 

I got 33 month visa which is end 15/12/2015

My question is when I need to do life in the uk test or b1 

English test I'm on 5 year route I did apply after 9/12/2012

So I need to do life in the uk test for only indefinite leave 

To remain (OR) For extend visa as well can you help me plz 

Hi Adil khan,

Mr. mr lookforward is given answer to your question. I want to add few more points;

You need to pass the Life in the UK test as well as B1 English test to become a British citizen. You must read the official "Life in the United Kingdom: A Guide for New Residents, 3rd Edition handbook" to pass the life in the UK test. Buy the official book from http://www.tsoshop.co.uk/bookstore.asp?FO=1240167 and do some practice tests from http://www.officiallifeintheuk.co.uk/test/, http://www.thelifeinuktest.co.uk and other online websites.