Can an estate agent let my property to his/her relative?

My estate agent let my property to a couple with child one year ago. My estate agent said the couple is partners (not husband and wife relationship). Recently, I've found that the male who is not the person signed the Tenancy Agreement is the son of my estate agent. Can I sue the estate agent?

Not as long as every other condition is within the law. If you are receiving fair rent, what is your problem. Sounds like maybe you should become a lawyer so you could sue to your hearts content.

why would you want to if your getting the full going rate in rent for the property and its being looked after.

one persons money is as good as anothers.whats your problem if the rent is getting paid.does it matter if they are not husband and wife.that's the way they choose to live and it shouldn't matter make any difference when they rent property.

As long as the tenants have signed a tenancy agreement and adhere to it, pay the full rent on time and respect your property I cant see a problem with them being related to the Estate Agent. At the end of the day you are getting your rent and they have a roof over their heads, happy days!! Whats your problem????

Why? What could possibly be wrong, unless you think the son is running a meth lab on your property? Or do you think a common-law relationship is against your religious principles? You have no grounds so long as the rent is paid, there are no noise complaints from the neighbours, and any maintenance required by the tenancy agreement is carried out.

Make sure the estate agent does not take unfair advantage of it.
There might be a tendency to let them neglect the property.
If you are receiving the agreed income from it, no probs.
It seems OK otherwise.