not doing nearly as badly as I thought.... used that strava thingumywhatsit to work it out for me (which counts my commute as 2x7 mile rides each time)...
According to my Strava data, I've cycled 28+ miles on 28 different days = so E=28 currently
To reach an Eddington number of 30, I need 3 more rides of 30+ miles.
To reach an Eddington number of 35, I need 12 more rides of 35+ miles.
To reach an Eddington number of 40, I need 25 more rides of 40+ miles.
all in all, that means that with what I have planned for May and indeed the rest of the year - I would hope to be E=35 or more by the end of May, and something like E=45 by the end of the year!
quite pleased with that for a relative novice.