I will also add my index of supporting documents here just incase it may help. Im sure its not perfect, we had no professional help...
1) Applicants Information:
A: Applicants letter of introduction
B: Passport and two colour passport-sized photos
C: Original Birth Certificate
D: Biometrics Confirmation
E: Work /Educational history / Evidence of Employability
Ea: Curriculum Vitae and teachers qualifications
Eb: Most recent employment contract
Ec: Letters of recommendation from former employer
Ed: Emails from prospective employer in UK with job interview offer
F: Proposed flight itinerary for travel to UK in September 2012
G: IELTS Certificate for compliance with the English language requirement
H: Certificate of joint account confirmation
I: Criminal record certificate
J: Copies of Cenomar. Eligibility for marriage
2) Sponsors Information:
A: Sponsors letter of introduction
B: Certified copies of passports Bio Page and visa stamps
C: Financial Information:
Ca: Current account bank statements for the previous six months +
Cb: Business account statements from the previous 6 months +
Cc: Bank letter confirming amounts in all accounts including savings and Cash ISA account statements
Cd: Accountants letter confirming current yearly earnings and projected earnings for next year/Online tax return form
Ce: Budget for living costs after arrival to UK
Cf: Bank statements provided in my absence and screenshots of internet banking
D: Evidence of accommodation in UK:
Da: House deeds showing ownership and land registry details / Utility bill
Db: Recent mortgage statement including payment alterations and amendments
E: Sponsorship undertaking form
F: Copies of CNI / Cenomar. Eligibility for marriage
3) Applicant - Sponsor Relationship
A: Original and certified copy of our marriage licence
B: Photo's from our wedding and honeymoon
C: Other proof of wedding arrangements, bookings, invitations, receipts ect
P.T.O
4) Additional proof of relationship
A: Flight details from visits. Including family of sponsor's attendance.
B: Photos of time spent together
C: Skype video call logs
D: Facebook messages log
E: Yahoo email logs
F: Viber logs of messaging and calls
G: Receipts from hotel reservations/accommodation