*Reviving a dead thread here*I pondered this question and when looking into it, I have found many applications that ask for these details. The use of your sort code and account number is not solely used for paying you, it is also used to identify you. If you provide these details along with other crucial information like: Address, Sort Code, NI, email, phone numbers etc. someone can collate this information and impersonate you over the phone.So the comment by Clip is void, yes you found those details, but can you now pinpoint the director and correspondence address to these details are linked too? (probably not). I have even come across applications that straight up ask for shots of passports - definitely scams, never send your passport in any preliminary application. So it seems to be a bit of a grey area as I have come across legitimate company's practicing this, so the advice I can give is to really look into the company properly. Use company search, glassdoor and google to verify that the company exists, look at there website, does it appear to be poorly designed and optimized with persistent grammar, spelling and formatting mistakes? If they have 20 likes on FB, you cant find any directors, no trupstpilot or glassdoor record, no easily verifiable address, and have a overall shabby and unprofessional vibe from there marketing communications there is a good chance that applications asking for these sensitive details are phishing scams, so be careful. I personally find emailing a CV is the best and simplest way to apply and really wish most companies would employ this technique instead of making us fill out often long drawn out applications, muddying the water with these conundrums.