The criminal record check will reveal varying categories of criminal record history information about you. 
Cautions, penalties, infractions, and expunged convictions will not be shown. There are, however, some specific convictions that are permanent and will remain on your record forever.
These include violent, sexual and serious crimes. These crimes remain permanently on your record to safeguard vulnerable adults and children from harm.
The DBS criminal check also reveals other crimes that were committed overseas. Some of these crimes are never removed from the record, such as terror offences, sexual, child abduction and murder.