What's this 'new' consulting practices at the Big 4 accountancies?
Deloitte never sold any part of their consulting business.
PwC sold most, but a rump was always left behind and the Northern Ireland office decidied not to be sold and stayed with the parent company.
Similarly, not all of KPMG's consulting activities went to Atos. Some stayed behind.
Only E&Y have anything new - their BAS practice.