Nice one, Scotty.
You will probably find that it's a lot easier simply to log the band, or the "generic" frequency for a particular band, rather than the precise, down to the microhertz number.
"20 CW" is just as valid as "14,017,247.4 CW", IMO. Unless Ofcom specifically requires a different format. Here in the States, we haven't had to keep actual "logs" for years, although I suspect most of us do.