[quote=Salty;470183]He's probably about an inch or so taller than me but with an easy 10kg's + on me.quote]

I feel your pain

As mentioned before blocks and parries might help. At least just this week having a bit more confidence in those seem to have improved my sparring. I would typically move and jab but after a while I find I move too much since it's easy to be pushed back further and loose power by someone bigger if your momentum is going that way a lot.

I do try to move sideways a bit which is better but I find that if a taller, heavier person is using a longer reach against me I get into the habbit of moving back and then sideways which still puts me out of range. Strong parries and block seem to make it easier for me to use my movement more efficiently (so it's a 1 or 2 steps instead of 5) and makes some of my counters - even just jabs - a little more powerful and less easy to ignore.

I'm not sure how much help that is but keep me posted on how you go since I have frustrations with larger sparring partners too!