DNA TESTING advise!! (Uk)

Hi all thanks in advance for anyone who can kindly help me, I am looking pointed in the right direction for home dna tests? For a father and daughter she is an adult now, but what I’m looking is a company that is 100% legit I’ve been conned before of lots of money and need real people toaybr tell me real stories and experiences with any company’s? I’m from uk but if you no a reliable company please share or if you have done or had dna test can you help? Thank you very much again if anyone can help me or give me advise x