If entry into your premises is effected without a warrant, CCCS will generally give you written notice of the intended entry at least 2 working days in advance This will not apply where CCCS has taken all such steps as are reasonably practicable to give notice but has been unable to do so. CCCS is able to enter your premises without notice where CCCS has reasonable grounds for suspecting that your premises are, or have been, occupied by an undertaking which is under investigation.