The UK Student visa rules are the same wherever you apply from - £558 visa fee, £776/year healthcare surcharge, and proof of funds for tuition plus 9 months of living costs (£1,529/month in London, £1,171/month outside). What's different for Ghana is the practical side: where to take an approved TB test, how to present a Ghanaian bank statement that UKVI will accept, and how to pay your fees in pounds.