I'm trying to pin down when my grandparents moved from Letchworth to Welwyn Garden City. From Find My Past I have them in the Spring 1926 Electoral Roll in Letchworth, and then in 1927 in WGC (no Spring or Autumn given). Does anyone know more precise dates when these electoral rolls where taken, or where I can find this out. I've only got PAYG access to FMP, so can't quickly get to any sort of header page, and haven't found the dates anywhere else on there, or via a general google search.
David Miller - researching Miller, Hare, Walker, Bright (mostly Herts, Beds, Dorset and London)