Buy to Let Mortgage - salary shortfall

Hello

Does anyone know of a mortgage lender that offers buy-to-let mortgages but is flexible regarding the level of applicants salary?

Property value is £100,000 approx, deposit saved is £25,000. But lenders seem to require an applicant to have a salary of £25,000 pa (Or £30,000 pa for joint applicants). This is a real stumbling block.

Any ideas or your own experiences would be really appreciated :)

Thanks.