Tier 1 (general) extension - People on per diems in the UK

Hi, I have queries pertaining to Tier 1 (general) extension while in the UK for people who get per diems + house rent in the UK along with a salary in India.
- Are per diems + rent paid by employer considered as UK salary? If yes, what sort of proofs are required?
- What if these per diems and rent are paid in an Indian account and not a UK account?

Any pointers provided on this aspect will be greatly appreciated.

Thanks.

MB

Allowances
103. We will only include allowances (such
as those for accommodation or schooling for
an applicant’s children) in the assessment of
an applicant’s previous earnings if they are
part of an applicant’s remuneration package
and are not paid to reimburse the applicant
for money he/she has previously spent.

104. We will only accept allowances as
earnings if they are declared in the applicant’s
payslips and there is a contractual obligation
on the employer’s part to make these
payments.

Source: UKBA Guidance Notes