If the financial standing is marginal, and if the applicant has plans to work in the UK, a job offer letter can be included to bolster the application's strength; and failing all other evidence, the applicant may attach a CV (or academic credentials) which demonstrate favorable prospects. Note however, that this is generally the weakest form of evidence.
http://londonelegance.com/transpondia/fiance/
it is up to the sponsor to support you, so they will not need recourse to public funds, but if he is skilled then mentioning once your married in your letter of support for him, he will seek employment to further reduce the risks of him needing recourse to public funds and if he has savings mention this in your letter of support, but its really up to the sponsor to be able to support them
