In Scotland, quite a lot of that destroying was actually done by the Presbyterian Scots themselves, in a similar iconoclasm to that which happened in the Netherlands when they began destroying Catholic "idols".

For instance, many Anglo-Saxon (southern Scotland included the old kingdom of Northumbria) crucifixes located in church graveyards were smashed and destroyed, because they contained "pagan" elements in them. The Ruthwell Cross is a surviving example of these crosses.https://en.wikipedia.org/wiki/Ruthwell_Cross