How did your new employers find out about a verbal warning ?
A refrence should not make any mention of it as it was not correctly administered. Even if it was done correctlya verbal warning should expire after 6 months. ( I think)
Most refrences now are just a statement of when you waorked there , the job title and the reason for leaving.
Someone with better knowledge than me should see this and answer
I have never heard of an employment cotract that specifies when a warning will be deleated.



