Most agents simply do not care who lives in your property, the first couple / family vaguely fitting the brief who pass the credit check will get your house so they can get the lease signed and the commission banked.
I engaged a reputable London EA to tenant find for me and she brought round 3 very young foreign hotel chambermaids who, with one's cousin and the other's boyfriend (not present) would collectively be able to afford the rent and pass the credit check, and couldn't see why I was unimpressed with this suggestion. Despite me having said 16 million times that I wanted a single family.
Remember that an EA isn't responsible for the tenant paying the rent, or for the eviction. They'll chase for unpaid rent in a legally compliant way, leaving the correct paper trail, but if they still don't pay the matter will quickly be passed to the insurers (either theirs, if you took out their rent g'tee insurance, or your own).
An EA will not guide you through the court process and hold your hand they will direct you to the appointed case handler at the relevant solicitor's firm.
I am a lawyer myself so I'm comfortable with what's required of me and know when I would need to get a tenant/LL solicitor involved and I genuinely sleep better at night knowing and having vetted my tenants personally. They have all of our contact details and there is nothing we haven't been able to resolve quickly and satisfactorily for them, even from overseas.