You are an expert UK bookkeeping compliance specialist and legal document drafter with extensive knowledge of UK accounting standards, Money Laundering Regulations 2017 (MLR), GDPR 2018, and ICAEW/ACCA/AAT ethical guidelines.

Generate a comprehensive, legally compliant Engagement Letter for bookkeeping services for a UK-based client.

**CONTEXT:**
- Client Name: [CLIENT_NAME]
- Business Name: [BUSINESS_NAME]
- Business Structure: [BUSINESS_STRUCTURE] (e.g., Sole Trader, Limited Company, Partnership, LLP)
- Services Required: [SERVICES_SCOPE] (e.g., monthly bookkeeping, VAT return preparation under MTD, CIS management, payroll processing, year-end accounts preparation, Self Assessment support)
- Fee Arrangement: [FEE_STRUCTURE] (e.g., £XXX monthly fixed fee, hourly rate £XX, project-based)
- Regulatory Body: [REGULATORY_BODY] (e.g., ICAEW, ACCA, ICB, AAT, or non-regulated)
- Accounting Software: [ACCOUNTING_SOFTWARE] (e.g., Xero, QuickBooks, Sage, FreeAgent)
- Engagement Period: [PERIOD_START] to [PERIOD_END] (or 'ongoing until terminated')
- Jurisdiction: [JURISDICTION] (England & Wales, Scotland, or Northern Ireland)
- Special Terms: [SPECIAL_TERMS] (optional: e.g., specific deadlines, sector-specific requirements)

**REQUIRED SECTIONS:**
1. **Header**: Professional format with reference number ENG-[YEAR]-[NUMBER]
2. **Parties**: Clear identification of service provider (your practice) and client, including company registration numbers where applicable
3. **Scope of Services**: Detailed breakdown including:
   - Specific bookkeeping tasks (bank reconciliations, invoice processing, etc.)
   - Making Tax Digital (MTD) compliance obligations
   - Software setup/training if included
   - Excluded services (tax planning, audit, legal advice)
4. **Client Responsibilities**: Provision of records, bank statements, timely information submission, accuracy of data provided, authorisation for HMRC/agent access
5. **Our Responsibilities**: Professional standards, confidentiality, MLR compliance, GDPR data handling as data processor, professional indemnity insurance disclosure
6. **Fees and Payment Terms**: Amount, VAT treatment @ 20%, invoicing schedule (monthly/quarterly), payment terms (30 days), late payment interest (8% above Bank of England base rate per Late Payment of Commercial Debts Act 1998)
7. **Limitation of Liability**: Cap on liability (typically 12 months fees or £X million—match to professional indemnity insurance), exclusion of consequential loss, force majeure
8. **Data Protection**: GDPR compliance, data retention periods (6 years for HMRC compliance), data subject rights, cross-border data transfers if using cloud software
9. **Confidentiality**: Mutual confidentiality obligations, permitted disclosures (legal/regulatory requirements)
10. **Money Laundering**: Identity verification requirements (ID/passport, proof of address), beneficial ownership disclosure for corporates, suspicious activity reporting obligations (no tipping off)
11. **Termination**: Notice period (typically 1-3 months written notice), final deliverables handover, cessation of HMRC agent authority, return of documents
12. **Dispute Resolution**: Complaints procedure reference, Professional Conduct in Relation to Taxation (PCRT) compliance, ombudsman referral
13. **Governing Law**: Specified jurisdiction law and courts
14. **Acceptance**: Signature blocks, 30-day acceptance period, electronic signature acceptance

**TONE & STYLE REQUIREMENTS:**
- Professional, authoritative yet accessible language
- UK English spelling and terminology (e.g., 'behaviour', 'organisation', 'HMRC', 'VAT', not 'IRS' or 'sales tax')
- Precise legal language for liability and termination clauses
- Clear, numbered paragraphs for readability
- Reference to relevant UK legislation: Companies Act 2006, GDPR 2018, MLR 2017, Finance Acts

**OUTPUT FORMAT:**
- Formal business letter layout with appropriate spacing
- Marked sections for [PRACTICE_SIGNATURE], [CLIENT_SIGNATURE], and [DATE]
- Ready for printing on letterhead or PDF conversion
- Include footer with practice registration details (ICAEW/ACCA number if applicable)

**CRITICAL INSTRUCTIONS:**
- Do NOT include US-specific terminology (IRS, GAAP, LLC, 1099 forms)
- Ensure MTD references are current and accurate
- Include anti-money laundering wording that satisfies the 2017 Regulations
- Specify that the agreement does not constitute tax advice unless explicitly included in scope