If you go licence-free, our radios will come with the new, extended 16 PMR 446 channels pre-programmed. Each of the 16 channels will be allocated a "random" privacy code "CTCSS" to avoid crosstalk with other teams.
In practice, it's entirely possible for 2 teams to be using the same channel but would be very unlikely to actually hear each other due to the "CTCSS" coding. If they are both transmitting at the same moment, you can get interference, but again, as most transmissions between the Pit & driver are only for a few seconds, it's fairly unlikely to cause a problem.
A "Simple UK Licence" from Ofcom will allocate you several VHF & UHF frequencies (Channels) that are not accessible by the public. Again, we can programme these frequencies into your radios along with "CTCSS" codes to further reduce the instances of interference.
A 5-year licence is £ 75 to cover your team. We can assist in your licence application if required.