You are an expert UK disability rights advocate and legal writer specialising in the Equality Act 2010, the UN Convention on the Rights of Persons with Disabilities, and UK administrative law.

I need you to draft a formal complaint letter regarding disability rights violations and/or failure to make reasonable adjustments.

**COMPLAINANT DETAILS:**
- My full name: [YOUR_NAME]
- My disability/condition (and how it affects me): [DISABILITY_TYPE]
- Preferred communication method: [COMMUNICATION_PREFERENCE]
- My contact details: [CONTACT_DETAILS]

**RESPONDENT DETAILS:**
- Organisation name: [ORGANISATION_NAME]
- Specific branch/department: [DEPARTMENT]
- Address for correspondence: [ORG_ADDRESS]
- Name of manager/CEO if known: [RESPONSIBLE_PERSON]

**THE INCIDENT(S):**
- Date(s) of incident(s): [INCIDENT_DATES]
- Location/service context: [LOCATION_SERVICE]
- Detailed factual description (chronological): [INCIDENT_DETAILS]
- Names/descriptions of staff involved: [STAFF_DETAILS]
- Specific impact on my health/dignity/independence: [IMPACT_DESCRIPTION]

**LEGAL & ADMINISTRATIVE CONTEXT:**
- Previous complaints/requests made: [PREVIOUS_ATTEMPTS]
- Evidence I hold (emails, photos, witness details, medical): [EVIDENCE_AVAILABLE]
- Specific policies they breached (if known): [POLICY_BREACH]
- Sector (retail, housing, employment, healthcare, transport): [SECTOR_TYPE]

**REQUESTED RESOLUTION:**
- Specific remedy sought: [DESIRED_OUTCOME] (e.g., policy change, training, physical adjustments, compensation, apology)

**WRITING INSTRUCTIONS:**
1. Format as a formal UK business letter with proper address blocks, date, and "Dear [Title] [Surname]" or "Dear Sir/Madam"
2. Subject line: "Formal Complaint: Failure to Make Reasonable Adjustments / Disability Discrimination - [Reference if applicable]"
3. Opening paragraph: State this is a formal complaint under the Equality Act 2010 regarding [specific failure], cite my disability status, and establish protected characteristic status under Section 6 EqA 2010
4. Legal grounding: Explicitly reference Section 20 (Duty to make reasonable adjustments), Section 29 (Provision of services), and/or Section 39 (Employment) as appropriate. Reference relevant UN CRPD articles (Article 9 Accessibility, Article 5 Equality)
5. Factual narrative: Present events chronologically with specific dates/times. Use objective, non-emotive language but convey the severity of the barrier
6. Duty breach analysis: Explicitly connect their actions/inactions to the specific legal duty failed (e.g., "This constitutes an unjustified failure to make reasonable adjustments under s.20(3) EqA 2010")
7. Proportionality: Explain why the adjustment requested was reasonable and not a "substantial disadvantage" for them to implement
8. Remedy clause: State exactly what I want them to do, by when, and under what authority
9. Escalation warning: Note that if unresolved, I will refer to the Equality and Human Rights Commission (EHRC), relevant Ombudsman (Local Government and Social Care/Ombudsman/Parliamentary and Health Service), or issue County Court proceedings under Part 4 EqA 2010 without further notice
10. Deadline: Set 14 days for acknowledgment and 28 days for substantive response
11. GDPR notice: Include that I consent to processing of disability data under GDPR Article 9(2)(f) for legal claims/protection
12. Language: Use [identity-first/person-first] preference as indicated in [DISABILITY_TYPE]

**OUTPUT STRUCTURE:**
- First: The complete letter (ready to copy)
- Second: A "Evidence Checklist" reminding me what to attach
- Third: Brief "Next Steps" guide explaining where to send (registered post vs email) and timelines