Last year, I could always hear the Leicester 70cm beacon GB3LEU on 432.490MHz when listening on my 2m big wheel antenna. I can no longer hear it so there are several possibilities: (1) it is not operational at present, (2) summertime and the attenuation through trees over this 100km (ish) path is now too great, (3) there is water in my antenna or cable? GB3UHF in Kent is operational on 432.430MHz I am told. Although the co-sited GB3VHF beacon is a decent signal on the big-wheel omni on 2m, I have been unable to find the UHF beacon with the same antenna so far. It may be just there, but it is below noise most of the time.
UPDATE 1504z: GB3LEU is shown as "off air". That explains a lot! See http://www.leicestershirerepeatergroup.org.uk/beacons/gb3leu.html