Can anyone recommend a testing service for travel to the US?

[GalesThisMorning]

We are 2 adults and a child, hoping to travel in 10 days. The tests are very confusing. Has anyone used a test service they can recommend?
Thanks

Assuming you're a US citizen OP, the embassy has info on testing centres here: uk.usembassy.gov/covid-19-coronavirus-information/

Thank you @cindarellasbelly. I am a US citizen. I'm a bit unclear as to whether or not I can use a cheaper Antigen test or I need the PCR test. The CDC says Antigen tests are allowed, the airline is pointing me towards PCR tests.

I think I'm just going to have to buy the more expensive one to be safe