The UK has adopted the change to 8.33 kHz radios effective from 1st January 2018. There is a CAA-issued temporary exemption place to allow a number of 25 kHz frequencies to be used. View the exemption here.
25 kHz frequencies end with: 00, 25, 50 or 75. An 8.33 kHz channel will have a 6 digit channel ending: 05, 10, 15, 30, 35, 40, 55, 60, 65, 80, 85 or 90.
WARNING. During 2018, UK airfields/airports will gradually move across to new frequencies. So the frequencies on your 1/2 mil chart may be incorrect. The only way of ensuring you have the correct frequency is to check before flight using NOTAMs and the update information supplied on the CAA’s 8.33 webpage under AIP 8.33 Conversion Data. When we are informed of a change, we will pass on the detail – the April BGA News includes two notifications.