I'm planning to apply for a 2-week visa to the UK for taking the PLAB 2 test. I have a monthly earning of about £200. I also have savings of £3,000. Out of these, a friend of mine transferred to my account about £2,000 4 months ago. Do I need to explain the source of this money?
Also, can I present evidence of crypto currency earnings from mining investments and also that I purchased gold and silver (precious metal savings) to buttress my financial situation?