Before getting the CAS (Confirmation of Acceptance for Studies) letter, do I need to show my financial documents such as bank statements in UK?

Yes, you typically need to provide financial documents like bank statements before receiving your CAS (Confirmation of Acceptance for Studies) letter.

Universities usually ask for these documents after you accept your unconditional offer and pay any required deposit. This proof is necessary to show you meet the UK's financial requirements for a student visa, and your CAS will only be issued after the university verifies these documents.

Make sure your documents are recent and meet the specific UK Visas and Immigration (UKVI) and university requirements.