Gordonsons closed down about 8 years ago...in fact it relocated from across the Entertainment Centre at least 10 years ago; that shop was renamed and has again renamed as Fleet Cycles.
When Gordonsons relocated, it went to Murray Street (smaller premises)
I checked Gordonsons on a government website, their trading name ceased on 4/6/2003
(4 June! not sure why Yanks write dates in that weird way of MONTH FIRST !! Arrgghhh)
Recorded as being a family partnership - CJ & JL QUADRIO