Guess I've missed the Sketchup 'boat' (as it were)

[Forestr]

No, you can download other versions. Just Google search “SketchUp (insert year/version) download”.

Here’s a 2014 download from a reliable source.

SketchUp Make 2014 Download Links (provided here)

Several people have been requesting older versions of SketchUp Make because they can’t use SketchUp Make 2015 with their computer’s older OS. Please see the hardware and software requirements to run current and older versions of SketchUp in our Knowledge Center here: SketchUp Hardware and Software Requirements | SketchUp Help Below are the links to download older versions of SketchUp Make. We will make this available for a stint, so folks can download SketchUp Make 2014 until they can upgrade t…