I have been at this company for over two years and lately I had an awful appraisal where both Directors sat either side of me and shouted at me for an hour while I sobbed. They say I am being obstructive to a new manager (man) who is paid a ridiculous amount for doing very little.

Anyway I have decided I cant work there comfortably anymore after the appraisal and they gave me a second written warning, on the other hand they said I was an asset to the company and they couldn't manage without me. My question is if I give my notice in can I say I will take my leave as notice (I have 24 days) and then leave immediately. I have never had a contract as the Directors are not very wise on personnel matters. Can they make me stay and work my notice?