Experimental realisations of spin models which exhibit a breakdown of Neel order have been much sought in the last few decades. One of the most theoretically attractive models which exhibit such physics is the s=1/2 kagome Heisenberg antiferromagnet. The naturally occuring mineral volborthite was put forward as a realisation of this model at an early stage, but has subsequently proved significantly more complex, exhibiting a short range ordered phase at T<1K and several field induced phase transitions. We propose here an inelastic time of flight neutron scattering experiment on the LET spectrometer to determine the nature of one of these high field states. We request 6 days of beamtime to both characterise high and low field phases, as well as tracking the spin dynamics across the transition at Hc1=4T. Should LET be unavailable, MERLIN would be a suitable substitute.