found Purple Mash:

• Builds student knowledge“both 2BeSafe and the main computing curriculum provide a spiral program of learning that builds year on year. Children understand how to be safe, responsible users that can navigate the digital world.”
• Reduces teacher workload“units of work are easily accessible, with PowerPoints and all resources provided. Purple Mash is a 'one stop shop' for all a teacher's needs in providing computing.”
• Improves teaching efficiency“I did not select always as some teachers will 'wing' a lesson rather than use the resources to ensure they are well informed before the session. This slows down the delivery of the lesson and reduces the impact of the children's learning.”
• Improves teacher knowledge“If the teachers engage with the unit, teacher guides etc.”
• Increases student collaboration“The collaboration tool to credit a partner/group with the work is a wonderful addition. Additionally, the ability for multiple children to work on a shared piece of work is powerful.”