Hi All,
Snuck out and gave it a try. Findings are:
Brake pedal down and the wheel wont travel anywhere.
Handbrake on and the wheel still turns but resistance
Handbrake cable slackened off and cable loose to both sides and when on, turns backwards fine and still the same dragging/resistance going forward.
So looks like I'll be taking it off. There is a slight weep from the 8 axle face bolts so it needs attention anyway.
So close to finishing a project which is rare for me! This is the last hurdle.