Thank you for the fast reply
I did mean the VAF4A Financial form, and have included this. The "Evidence of postage" is receipts from Royal Mail / USPS online accounts showing we send packages and letters to each other over the course of the relationship.
I do have a few more questions from the points you made:
We submitted the online application last night and we are going to send the documents to Sheffield on Friday. My latest payslip is from 31 December - so I assume that will be within the 28 day range (as its 28 days from the date of submitting the application online?).
As for the passports - my partner (the applicant) had two previous passports, however they are both lost.
He didn't know the passport numbers or dates of issue, so he contacted the Department of State who supplied him with the passport numbers and dates of issue in a certified letter. Should we include this letter with the application, or do you think just entering the passport number and date of issue onto the online form will be enough? The letter doesn't say the passports were lost, it just gives the document number and expiry dates.
Many thanks!
So, a slightly revised list of documents (my comments in red):
Applicant Documents
Priority visa receipt
Printed online Visa Application Form
VAF4A Appendix 2 form
Cover letter (from applicant)
Passport and passport photos
Any previous expired passports
Biometric appointment confirmation letter
Immigration Health Surcharge receipt
Return shipping Label
Sponsor Documents
Cover letter from sponsor
Copy of sponsor's passport photo page
Financial Requirement
Letter from sponsor's employer
6 full months of sponsor's payslips
Sponsor's employment contract
Letter from sponsor's bank (I assume to confirm authenticity of statements?)
6 full months of sponsor's bank statements
Latest P60 (issued April 2017)
Accommodation
Letter from landlord
Tenancy agreement
Relationship Evidence
Marriage certificate
1-2 photos of you and your sponsor together (i.e. one at the wedding, one earlier in the relationship)
Cards (Christmas, etc)
Flight receipts
Skype screenshots (should be evenly spaced over the relationship - no message content, just a list of calls or messages on 1-2 sheets of paper)