Incorrect. I'm not quite sure what your agenda is, and it's probably not worth spending too much time debating this, but just to clarify:
Astronomical Spring: From the Spring Equinox to the Solstice (approx 22nd March to 21st June)
Meteorological Spring: March to May. Always has been, for the purposes of accurate data collection and archive
Custom Spring: Whatever you want it to be for wherever you are in the UK and not to be confused with either of the above which are fact and not subject to perceptive interpretation.
Hope that makes things a little less confusing for you.
Originally Posted by: nsrobins