hello..
I am an American citizen married to a British national, and we are living in Latvia at the moment.I am trying to complete the documents required to apply for a spouse visa for the UK.
Regarding the letter of introduction that I (the applicant) must provide , what must it contain? And how long should it be???? Must it be provided by a certain Embassy??
Any help would be appreciated!!

I am an American citizen married to a British national, and we are living in Latvia at the moment.I am trying to complete the documents required to apply for a spouse visa for the UK.
Regarding the letter of introduction that I (the applicant) must provide , what must it contain? And how long should it be???? Must it be provided by a certain Embassy??
Any help would be appreciated!!