Some are technically assigned ofcom UHF, but look in all the business bands where people can licence on line simply. For interference reasons, many get plonked in 453-456. the london area had these frequencies, but theyre a bit old now.
Ch1. 454.39375 MHz, 12.5 kHz ch.sp. (0.5 to 5 watts TX systems)
Ch2. 454.40625 MHz, 12.5 kHz ch.sp. (0.5 to 5 watts TX systems)
Ch3. 454.79375 MHz, 12.5 kHz ch.sp. (0.5 to 5 watts TX systems)
Ch4. 454.80625 MHz, 12.5 kHz ch.sp. (0.5 to 5 watts TX systems)
Ch5. 454.02500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch6. 454.05000 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch7. 454.07500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch8. 454.10000 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch9. 454.12500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch10. 454.15000 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch11. 454.17500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch12. 454.25000 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch13. 454.27500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch14. 454.30000 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch15. 454.32500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch16. 454.35000 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch17. 454.70000 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch18. 454.77500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)
Ch19. 454.78750 MHz, 12.5 kHz ch.sp. (5 to 50 watts TX systems)
Ch20. 454.82500 MHz, 25.0 kHz ch.sp. (5 to 50 watts TX systems)