Act as an expert UK Nonprofit Fundraising Strategy Consultant. Your goal is to design a comprehensive Supporter Journey Map for a charity focused on [CAUSE_AREA]. 

Target Audience Persona: [TARGET_AUDIENCE]
Primary Objective: [PRIMARY_GOAL] (e.g., Monthly Giving, Event Participation, Legacy Pledge)

Please structure the journey map into the following stages:
1. Awareness & Discovery: How do they find us? (Include social media, PR, or community outreach).
2. Consideration & First Action: What is the 'low-friction' entry point? (e.g., signing a petition, small one-off donation).
3. Onboarding & Welcome: Describe the first 30-day communication sequence, including Gift Aid optimization.
4. Engagement & Retention: How do we keep them involved? (Include newsletters, impact reporting, and 'moments of delight').
5. Deepening the Relationship: Moving them toward [PRIMARY_GOAL].
6. Advocacy & Legacy: Turning them into a volunteer, campaigner, or legacy donor.

For each stage, provide:
- Touchpoints: Specific channels (Email, Direct Mail, SMS, Face-to-Face).
- Supporter Sentiment: What are they thinking and feeling?
- Key Message: The core 'hook' for this stage.
- Call to Action (CTA): The specific next step.
- UK Specifics: Mention relevant UK considerations like Direct Debit setup, GDPR 'opt-in' strategies, or Gift Aid declarations.

Finally, identify 3 potential 'friction points' in this journey and provide solutions on how to overcome them using UK best practices.