Not my debt so I sent bailiffs copies tenancy agreement, can they call to validate the info?


No

Enforcement Agents do not have the power to enter and search anyone's property to satisfy themselves the debtor does not live there.[1]

If an enforcement agent forces his way into a person's property and refuses to leave, even if the address used to be occupied by the debtor, the occupant may sue for damages for £10,000 plus costs.[2]


[1] Paragraph 14 of Schedule 12 to the Tribunals Courts and Enforcement Act 2007.
[2] See Neil Tunstall vs Direct Collections Bailiffs Limited (DCBL) and Mr Hussain