we have reason to believe that you and/or any of your Personnel are involved in fraudulent activity or have been involved in fraudulent activity [whilst the Purposes are/were being carried out];
bod rheswm gennym gredu eich bod chi a/neu unrhyw rai o'ch Personél yn cymryd rhan mewn gweithgarwch twyllodrus neu wedi bod yn rhan o weithgarwch twyllodrus [wrth i'r Dibenion gael eu cyflawni];