Quote 1:
"Cautions, reprimands and final warnings are not sentences with rehabilitation periods.
However, the Government is intending to include them within the Act and give them a
rehabilitation period of nil, which means that they will become spent instantly. In the
meantime, those people with only a caution on their criminal record can answer ‘no’ if
asked whether they have a criminal record, because this is usually understood to mean convictions."
Quote 2 (relating to CRB checks):
"These disclosures show spent and unspent convictions on the PNC along with cautions, reprimands and final warnings. Enhanced disclosures will sometimes also show information from local police records."
http://www.nacro.org....cro-2007021302-65.pdf
Any cautions or convictions appearing on a CRB check have to be considered by the university hosting your course. They don't automatically bar you from training. See here:
http://tinyurl.com/359m8pl
Chris