Complex sentence: Waltham Forest Community Credit Union (not to be confused with the separate Waltham Forest Council Employees Credit Union) was formed in 2003, becoming East London Community Credit Union in 2012, before adopting the current name in 2015.
Split into simpler sentences: Waltham Forest Community Credit Union (not to be confused with the separate Waltham Forest Council Employees Credit Union) was formed in 2003. It became East London Community Credit Union in 2012, before adopting the current name in 2015.