According to my reading of CAP1573, 119.875 will be a 8.33 kHz frequency, although 119.880 will be displayed. Have you tried that?
There is a lot of misunderstanding on the 8.33 issue. 119.875 is a 25 freq
25 khz freqs will still be 25khz freqs and will be selectable as before on your new 8.33/25khz radio(unless you have an IcomA220 which is a bit more difficult as explained in earlier post)
Good reading here to explain:
http://www.lightaircraftassociation..../May/radio.pdf
The table requires a good look to understand that your new 8.33 radio is in fact dual 8.33/25.....and your old 25 will work just fine on those freqs....which begs the question as to why we are not supposed to use them!
Oh... and CAP1573 says
"The licensing fee charged by Ofcom for an 8.33 kHz radio licence will be significantly less than the 25
kHz licence fee, due to the reduced bandwidth occupied." Yea right....... more like blackmail!