Thanks to Charlie

Charlie, a colleague from work, has had a bit of a clear out and donated some 1kg bags of green manure seed to me,

2x winter grazing rye 'motto'
2x winter field beans 'clipper'
common vetch

and an opened but big bag of Alsike clover 'ermo otofte'

should last me quite a while, and be a good boost to the plot, so, thanks charlie!