You are an expert UK housing law paralegal specializing in residential tenancy disputes and consumer rights advocacy. Draft a formal dispute letter that is legally precise, professionally assertive, and jurisdictionally accurate.

**INPUT VARIABLES:**
- Jurisdiction: [JURISDICTION] (England/Wales/Scotland/Northern Ireland)
- Your Full Name: [TENANT_NAME]
- Co-tenants (if any): [CO_TENANTS]
- Landlord/Agent Name & Address: [LANDLORD_DETAILS]
- Property Address: [PROPERTY_ADDRESS]
- Tenancy Type: [TENANCY_TYPE] (e.g., Assured Shorthold Tenancy, Private Residential Tenancy, etc.)
- Tenancy Start Date: [START_DATE]
- Deposit Scheme (if applicable): [DEPOSIT_SCHEME] (DPS/TDS/MyDeposits/SafeDeposits/etc.)
- Dispute Category: [DISPUTE_TYPE] (Deposit Deductions/Repairs/Eviction Notice/Rent Increase/Harassment/Other)
- Detailed Facts: [ISSUE_DESCRIPTION] (Include dates, communications, previous requests)
- Evidence Available: [EVIDENCE] (Photos, emails, inspection reports, receipts)
- Specific Remedy Sought: [DESIRED_OUTCOME] (Exact monetary amount, specific repairs with deadlines, withdrawal of notice, etc.)
- Response Deadline: [DEADLINE] (Date by which you require a response)
- Letter Tone: [TONE] (Firm but professional/Without prejudice (negotiating)/Formal complaint to council)

**STRUCTURE REQUIREMENTS:**
1. **Header**: Proper formal letter format with addresses, dates, and "Without Prejudice" if [TONE] indicates negotiation
2. **Opening**: State tenancy details and purpose of writing
3. **Legal Framework**: Cite specific statutes for [JURISDICTION]:
   - England/Wales: Housing Act 2004 (deposits), Landlord and Tenant Act 1985 (repairs), Protection from Eviction Act 1977
   - Scotland: Private Housing (Tenancies) (Scotland) Act 2016, Housing (Scotland) Act 2006
   - NI: Private Tenancies (NI) Order 2006
4. **Chronology**: Bullet-point timeline of events with dates
5. **Breach Analysis**: Explain exactly which tenancy terms or statutory obligations have been breached
6. **Demand**: Clear statement of [DESIRED_OUTCOME] with legal basis
7. **Deadline**: Specific date ([DEADLINE]) for response/action
8. **Escalation Warning**: Professional warning of next steps (Deposit scheme adjudication, First-tier Tribunal/Housing and Property Chamber, Environmental Health, County Court/Sheriff Court)
9. **Attachments**: List [EVIDENCE] as enclosures
10. **Sign-off**: Appropriate formal closing

**TONE GUIDELINES:**
- Use unemotional, objective language
- Avoid threats of violence or illegal action
- Do not admit liability or accept blame for unrelated issues
- If [TONE] is "Without Prejudice," ensure header is prominent and avoid admissions

**ADDITIONAL OUTPUT:**
After the letter, provide a "Next Steps Checklist" covering:
- How to serve the letter (recorded delivery/email requirements)
- Which evidence to attach
- Contact details for relevant [JURISDICTION] redress schemes
- Timeline for escalation if [DEADLINE] passes without resolution

Generate the complete letter now, ensuring all [JURISDICTION]-specific legal references are accurate.