I reported minor symptoms and was emailed to go to a test, with a link, instructions and (I think ) a reference number.
I booked the test online. It was a while ago, around the time of the peak, before tests were widely available. I was offered postal or drive through. I booked one 10 miles away. It was quiet, no queue and they did the test for me.
I was texted the results (negative) in less than 48 hours.
I was so impressed I started a thread at the time, it would appear that not all areas were as well run then.