Some people who want to visit the UK are unable to do so unless a 3rd party steps in and offers to provide sponsorship. We see a lot of this type of thing on this site; nearly all the refusals have to do with either funds parking or sponsorship inadequacies. But indeed, a person can use a sponsor...
This is specifically provided for in V 4.3 of the rules, which says...
V 4.3 A visitor’s travel, maintenance and accommodation may be provided by a third party where the decision maker is satisfied that they:
(a) have a genuine professional or personal relationship with the visitor; and
(b) are not, or will not be, in breach of UK immigration laws at the time of decision or the visitor’s entry to the UK; and
(c) can and will provide support to the visitor for the intended duration of their stay.
While the rules are clearly expressed and seem easy to meet, experience tells us that Entry Clearance Officers are sometimes reluctant to extend full credibility to the sponsor. Applications can be refused when this happens, even though the applicant is not at fault.
This puts an onus on the sponsor to be diligent and it follows that the sponsor would include a well-drafted, articulate, and comprehensive letter to the decision-maker that explains the nature and scope of their commitment.
While this occurs to many would-be sponsors, their letters can be incomplete or ineffective (or sadly pathetic) because they do not understand what the Entry Clearance Officer wants to see in such a letter. Without knowing what should be in the letter, it's a waste of time.
Question: What is a good template to use in preparing a sponsor's letter so that all the various points are covered? In fact, what are the critical points that must be covered to maximize the chances of success?
Secondary question: what, if any, points should be avoided in a sponsor's letter? In other words are there any pitfalls that might undermine the sponsor's credibility?