Tier 1 extension and IELTS

[razmyan]

My tier 1 general extension is due in aug 2012..I have already showed my
English proficiency at initial application in aug 2012,
As IELTS expires in 2 years , so my question is would it be a compulsion to do IELTS again for the extension to get English language proficiency points or it's not needed for extension.

[ScopeD]

131. An applicant meets the English
language requirement, without the need to
provide evidence, if he/she was last given
permission to stay in the United Kingdom:

• under Tier 1 (General) and is applying for
an extension of leave to remain; or

• as a Highly Skilled Migrant Programme
participant under the Immigration Rules
which came into force on 5 December
2006 and is applying for an extension of
leave to remain under a Tier 1 category.

Source: UKBA Policy Guidance