Is It Better to Pre-Book a London Airport Taxi or Get One on Arrival?

Hello everyone!

I'll be travelling to London soon and I'm trying to figure out the best way to get from the airport to my hotel near King's Cross.

Since I'll be arriving with luggage and I'm not very familiar with London's public transport, I'm considering booking an airport taxi in advance rather than taking the train or Underground.

While looking at different options, I came across https://londonairport-taxi.com/ and was wondering if anyone has experience with this service or similar airport transfer companies.

Is it generally better to book a taxi online before arriving, or is it easy enough to find a reliable taxi at the airport?

I'm also curious about typical prices, waiting times, and whether pre-booked drivers track flight delays.

I'd really appreciate any advice or recommendations from people who have travelled to London recently, especially solo travellers.

Thanks in advance!