Each council is unique
There is no reason to use a common ERP system in the UK. None. Take Surrey for example.
It is unique.
Unique air, in fact as it passes over Surrey it's improved for the next borough
Unique Roads, the smell of freshly laid Surrey tarmac in the morning is like nothing else.
Unique Trees, we even have a hill named after a tree.
Unique Paths
Unique Bins
Unique People
Truly Unique and deserves its own stand alone system not some insanity like this https://www.theregister.co.uk/2012/08/02/oracle_r12_for_6_london_councils/