We use such PRINCE2 principles as:

• Each stakeholder is a supplier
• Contract with each team member
• Clearly defined delivery success criteria
• Product break-down structure (PBS)

We do SCRUM based development with:

• Task breakdown into max 1-2 days
• Sprints of 3-5 weeks
• Backlog and Sprintlog planning

We use LEAN principles to avoid waste and to reduce time consumption:

• Documentation on demand
• As few information proxies as possible
• Visual software development model