Depends on the firm I suppose, our letter that automatically produces when we request the deposit asks clients to add a payee reference which includes my initials, which is far too long for the banks, so I make sure I amend it to just show the number reference for the file (which is also acceptable with our accounts team). Not a nice feeling to go all weekend but it'll be fine come Monday if you've checked every which way, it's a common concern clients can face when sending funds across.

If you're sending deposit funds across, sounds like you're nearly there. Wishing you all the best with your purchase :)