I graduated with 1st class honours - do I add it to the letters after my name? I'm in the UK and graduated with 1st class honours. Should I write my name as: 


FirstName Surname Bsc(Hons) (1st class)
FirstName Surname Bsc(Hons)


or something else when writing a CV and on business cards?
No. The class of a degree is not written in your post-nominal qualifications. You can add it in he educational details on your CV.