Tenant Track and Trace – GDPR?

Hi All, I have a tenant who is subletting (I don’t know any details of their agreement except that the person is living in the room and causing a lot of issues with the other flatmates) and now has stopped paying rent in response to me serving a S21 on him.

I have served a Section 21 and the court has sent a Notice of Issue which was deemed served on 12/08/2022, so I can send this back now.

There are a few discrepancies in the tenancy agreement and deposit which I posted about previously on here. I am worried the tenant will make this an issue in court.

I’m sure the tenant is working 3 hours away (his details are on a company website based in that area) and I suspect he must have another house or tenancy around that area.

I understand if I can prove he lives somewhere else his tenancy agreement is void anyway, so I’d like to be able to prove this to the court as a backup in case they rule in his favour due to the discrepancies on the tenancy agreement or at the least they call for a hearing which will delay things by at least 3 months.

My question is: If I use a Track and Trace company to find him, will there be any GDPR implications?

Obviously, I would need to share his personal details with them in order for them to find him. We would need to share his details with a contractor for a repair issue for example, would this be any different?

I would be grateful to anyone who can shed any light on this.

Meks