I also use the Andrew James unit. Works perfectly. This is the one I got. As well as vacuum sealing the hops it can reseal plastic grain bags with the 'heat seal only' option if you take care to just trim off the corner when you cut them open.
Nice one m8....
Thinking re seal the hops and put them in the freezer..
I had to stop!! Be nowt in when our lass gets home...apart from loads of sealed bags all ova...lol