What materials do you need for a visa complaint in the UK?

For visa complaints in the UK, the specific materials required may vary according to individual circumstances, but usually the following documents need to be prepared:

1. letter of complaint: state the objection to the decision to refuse the visa, explain the misunderstanding of the reasons for the visa refusal or provide other relevant information.

2. Supporting documents: provide evidence to support your complaint, such as contracts, education certificates, work contracts, bank statements, etc.

3. proof of funds: prove that you have enough funds to pay tuition fees, living expenses and other expenses, such as bank statements, scholarship certificates, letters of guarantee, etc.

4. Academic documents: If it is an academic visa, you may need to provide an admission notice, academic transcripts, research plans, etc.

5. Employer's Letter of Proof: If it is a work visa, it may be necessary to provide employer's letter of proof, job description, work contract, etc.

6. Identification: Provide valid passport, ID card and other identification documents.

7. Other supporting documents: It may be necessary to provide other supporting documents according to personal circumstances, such as family relationship certificate and medical insurance certificate.

Please note that all documents are originals or certified copies, and English translation documents are provided (if the originals are not in English). In addition, additional documents or certificates may be required according to personal circumstances and reasons for refusal. It is best to consult a professional immigration lawyer or consulting agency to ensure that you have provided appropriate materials and complaint procedures.