How to Prove Your Relationship for a UK Spouse or Fiancé Visa

If your Thai partner is applying for a UK spouse, unmarried partner or fiancé visa, your application needs to show that your relationship is genuine and ongoing. The evidence should explain your life together, including how your relationship developed and how you stay committed when living in different countries.

A clear, consistent selection of documents is more useful than hundreds of unexplained screenshots. This guide explains how to organise your relationship evidence for a UK family visa application from Thailand.

Start with the visa route you are applying for

For a spouse application, include evidence of your legally recognised marriage. For a fiancé application, explain your plans to marry in the UK within six months of arrival and provide relevant evidence of those arrangements.

An unmarried partner application requires evidence of a relationship similar to marriage or civil partnership lasting at least two years. Couples who have not lived together need to explain their circumstances and demonstrate the substance of their commitment.

For the wider application requirements, read our UK spouse visa application guide for Thailand.

Which documents help prove your relationship?

Marriage and previous relationships

Include your marriage certificate where applicable, together with an appropriate English translation of Thai documents. If either partner was previously married, include the relevant divorce or death certificate.

A marriage certificate establishes your legal marriage. Your application should also explain your continuing relationship and your plans to live together permanently in the UK.

Evidence of living together

If you have shared a home, useful documents can include:

• A tenancy agreement naming both partners.
• Bank statements or official correspondence showing the same address.
• Utility bills or other records of shared household expenses.
• Relevant letters from a medical professional confirming your address.

If your Thai tenancy or bills are only in one name, explain this and provide other available records. Do not alter documents to make them appear jointly issued.

Visits and time spent together

When one partner lives in the UK and the other in Thailand, organise evidence of visits into a simple timeline. Travel records, accommodation bookings and selected photographs can help explain when and where you spent time together.

Caption photographs with the date, location and people shown. Choose examples from different stages of the relationship rather than a large collection from one holiday. Photos support your account but should not replace stronger documentary evidence where it is available.

Contact while you are apart

Selected LINE, WhatsApp or Messenger records can illustrate ongoing communication. Keep names and dates visible and choose examples spread across the periods you lived apart.

There is no prescribed minimum number of calls, messages or minutes of conversation. Explain how you normally communicate and any gaps in contact. You do not need to include intimate material.

Shared responsibilities and financial support

Where relevant, include evidence of shared expenses, financial support or responsibilities for children. Explain the purpose of transfers so that the caseworker can understand their place in your relationship.

Sending money alone does not explain the whole relationship. Present it alongside the other evidence of your commitment.

What if you have never lived together?

Living apart does not automatically mean that your relationship is not genuine. Explain why you maintain separate homes, how often you meet and how you intend to establish your home together in the UK.

For unmarried partners, simply showing that you have dated for two years is not enough on its own. Your evidence needs to demonstrate a relationship similar to marriage or civil partnership.

Prepare a short relationship statement

A factual statement can connect the documents into a clear account. Include when you met in person, how the relationship developed, significant visits, any periods of living together, and your plans for the UK.

Check that dates agree with the application form, travel records and supporting documents. Explain any separation, reconciliation or unusual circumstances honestly.

Common mistakes to avoid

• Submitting large chat exports without explaining their relevance.
• Providing photographs without dates or captions.
• Giving conflicting dates across statements and application forms.
• Leaving gaps or changes in the relationship unexplained.
• Assuming relationship evidence replaces the financial, English language or other visa requirements.

Help preparing your UK family visa application

Thai Visa Express helps couples applying from Thailand organise their relationship history and supporting documents. We can identify gaps and help present your circumstances clearly.

Read our UK spouse visa guide and UK visa financial requirements guide, or contact us on WhatsApp to discuss your application.