Here is the step-by-step process to apply for a UK dependent visa for your spouse:

Step 1: Check eligibility based on your visa type and relationship

Step 2: Gather all required documents

Step 3: Complete the UK visa application form online

Step 4: Pay the visa fee and Immigration Health Surcharge

Step 5: Book and attend a biometric appointment

Step 6: Submit supporting documents at the visa centre

Step 7: Wait for the decision

Step 8: If approved, receive the visa