BlitzAPI vs Pure Tax Investigations
Side-by-side comparison to help you choose the right product.
BlitzAPI
BlitzAPI provides clean B2B data through powerful APIs to enhance your growth team's go-to-market strategies.
Last updated: February 28, 2026

Pure Tax Investigations
Pure Tax Investigations provides expert defense for businesses in serious HMRC tax disputes.
Last updated: March 1, 2026
Visual Comparison
BlitzAPI

Pure Tax Investigations

Feature Comparison
BlitzAPI
Smart ICP Targeting
BlitzAPI offers intelligent Ideal Customer Profile (ICP) targeting that enables users to swiftly identify and prioritize decision-makers. The unique algorithm ranks potential leads, ensuring that teams focus on the most relevant prospects for their outreach efforts.
Verified Email & Phone Enrichment
This feature provides users with verified and accurate email addresses and direct phone numbers, ensuring that outreach efforts are based on reliable contact information. This significantly enhances the chances of successful engagements with potential clients.
Catch-All Email Validation
BlitzAPI includes real-time validation for catch-all emails, boasting an accuracy rate of over 98%. This feature helps users avoid the pitfalls of guessing email validity, ensuring that their communications reach the intended recipients.
Unlimited Data Enrichment
With BlitzAPI, users can enrich their data at scale through simple API calls. This feature allows for the enrichment of emails, phones, LinkedIn profiles, and company data, providing comprehensive insights necessary for effective prospecting and decision-making.
Pure Tax Investigations
Specialist Team with Ex-HMRC Insight
The firm's advisory team is comprised of experienced, qualified tax investigation specialists, including former senior HMRC inspectors. This provides clients with an unparalleled strategic advantage, as the team possesses insider knowledge of HMRC's operational approaches, tactics, and decision-making processes, enabling them to anticipate challenges and build the most effective defence and negotiation strategies.
End-to-End Investigation Management
Pure Tax Investigations provides comprehensive management of the entire HMRC engagement process. This includes initial analysis and case evaluation, handling all correspondence, preparing detailed disclosures and reports, negotiating with HMRC officers, and representing clients through to resolution, whether via settlement, Alternative Dispute Resolution (ADR), or tribunal.
Discreet & Bespoke Client Service
Understanding the sensitivity of tax investigations, the firm offers a highly discreet and tailored service. Each client's situation is evaluated individually, with advice and strategy crafted to meet specific commercial aspirations and personal circumstances, ensuring a confidential and personalised approach from start to finish.
Wide Spectrum of Tax Issue Expertise
The firm possesses deep expertise across a vast range of complex tax matters. This includes specialist knowledge in areas such as R&D tax enquiries, Inheritance Tax investigations, offshore disclosures (WDF), property tax (Let Property Campaign), crypto asset enquiries, and corporate criminal offence (CCO) advice, making them a one-stop resource for intricate tax problems.
Use Cases
BlitzAPI
Streamlining Outbound Sales Campaigns
Sales teams use BlitzAPI to enhance their outbound campaigns by accessing verified contacts and enriched data. This ensures that their outreach is targeted and effective, reducing wasted effort on unqualified leads.
Automating Lead Enrichment Processes
Organizations leverage BlitzAPI to automate their lead enrichment processes. By integrating seamlessly with existing workflows, teams can enrich their leads in real-time, allowing for a more agile and responsive sales strategy.
Improving Data Integrity for Marketing Initiatives
Marketing departments utilize BlitzAPI to ensure their databases are up-to-date and accurate. This enhances the effectiveness of their campaigns by allowing them to target the right audience with the right message, driving higher engagement rates.
Facilitating Integration with Existing Software
BlitzAPI's flexible architecture allows for easy integration with existing software solutions. This capability empowers teams to incorporate high-quality data into various applications, improving overall productivity and operational efficiency.
Pure Tax Investigations
Facing a Serious HMRC Fraud Investigation (COP9)
When an individual or business receives a Code of Practice 9 (COP9) letter from HMRC's Fraud Investigation Service, it indicates a suspected serious tax fraud. Pure Tax Investigations provides critical expert guidance through this daunting process, managing the contractual disclosure facility (CDF) process, preparing a robust disclosure report, and negotiating to secure the best possible civil settlement and avoid criminal prosecution.
Managing a Complex HMRC Enquiry into a Large Business
Large corporates undergoing intensive, cross-tax enquiries benefit from the firm's structured approach. Pure Tax Investigations acts as a strategic buffer, analysing HMRC's information requests, coordinating with the client's accountants, and deploying technical expertise to challenge HMRC's positions and achieve a commercial resolution that minimises disruption and financial impact.
Making a Voluntary Tax Disclosure
For clients with undisclosed tax liabilities related to offshore assets, rental property income, or crypto gains, the firm facilitates voluntary disclosures through HMRC's campaigns like the Worldwide Disclosure Facility (WDF) or Let Property Campaign (LPC). They ensure the disclosure is complete, accurate, and presented optimally to mitigate penalties and interest.
Responding to an HMRC Compliance Check or Information Notice
Even routine HMRC compliance checks can be burdensome. Pure Tax Investigations steps in to handle all communications, ensuring client responses to information notices (Schedule 36) are legally compliant and strategically sound, preventing a simple check from escalating into a wider, more invasive investigation.
Overview
About BlitzAPI
BlitzAPI is a robust API toolbox tailored specifically for go-to-market (GTM) teams aiming to optimize their prospecting efforts through access to accurate and fresh B2B data. Designed to enhance outbound and revenue operations workflows, BlitzAPI allows teams to search for and enrich contacts and companies, validate work emails, and retrieve verified phone numbers. This platform stands out by prioritizing quality data aggregation and employing deliverability-first practices for email communications. BlitzAPI is ideal for GTM agencies, outbound sales teams, and organizations looking to create repeatable playbooks while ensuring data integrity. With seamless integration capabilities, BlitzAPI empowers teams to streamline their workflows, enhance operational efficiency, and achieve superior results with minimal effort. The platform’s commitment to providing verified, accurate data is what makes it an invaluable resource for teams striving for scalability and effectiveness.
About Pure Tax Investigations
Pure Tax Investigations is a premier, specialist advisory firm that acts as an independent and expert intermediary between clients and HM Revenue & Customs (HMRC). The firm is dedicated to providing a robust defence and strategic resolution for individuals and businesses facing the immense pressure of HMRC enquiries, investigations, and disclosures. It is specifically designed for entrepreneurs, business owners, private clients, and large corporates whose complex domestic and international tax affairs have come under HMRC scrutiny. The core value proposition lies in its deep, pragmatic expertise, which is led by former senior HMRC tax inspectors. This unique insight ensures clients receive a service characterised by certainty, absolute discretion, and fierce protection. Pure Tax Investigations manages the full spectrum of compliance issues, from routine checks and compliance reviews to the most serious civil fraud investigations under Code of Practice 9 (COP9) and complex enquiries under Code of Practice 8 (COP8). The firm's mission is to serve as a dedicated specialist fighting relentlessly on behalf of clients to achieve commercial, wealth-preserving resolutions, providing peace of mind during inherently stressful processes.
Frequently Asked Questions
BlitzAPI FAQ
What types of data can I access through BlitzAPI?
BlitzAPI provides access to a wide range of B2B data, including verified email addresses, phone numbers, company profiles, and enriched contact information for effective prospecting and engagement.
How does BlitzAPI ensure data accuracy?
BlitzAPI employs rigorous validation processes, including real-time catch-all email validation, to ensure that the data provided is accurate and reliable, thereby enhancing the effectiveness of outreach efforts.
Can BlitzAPI integrate with my existing CRM?
Yes, BlitzAPI is designed for seamless integration with various CRM and marketing automation tools, allowing teams to enhance their existing workflows without needing to overhaul their systems.
Is there a free trial available for BlitzAPI?
BlitzAPI offers a free trial that includes 1,000 credits, allowing potential users to explore the features and capabilities of the platform without any financial commitment.
Pure Tax Investigations FAQ
What makes Pure Tax Investigations different from my accountant?
While accountants handle compliance and routine tax filings, Pure Tax Investigations specialises exclusively in contentious tax matters and HMRC investigations. Their team includes ex-HMRC inspectors with direct experience conducting enquiries, giving them unique tactical and procedural insight to defend clients aggressively, which most general practice firms cannot offer.
What should I do if I receive a Code of Practice 9 (COP9) letter from HMRC?
A COP9 letter is extremely serious and requires immediate, expert attention. You should contact a specialist firm like Pure Tax Investigations immediately and before responding to HMRC. They will advise you on your options, typically involving entering the Contractual Disclosure Facility (CDF) to make a full disclosure and seek a civil settlement, which they will manage on your behalf.
Can you help with disclosures for offshore income or gains?
Yes, Pure Tax Investigations has extensive experience managing disclosures through HMRC's Worldwide Disclosure Facility (WDF) and other offshore campaigns. They ensure all historical income, gains, and related tax liabilities are correctly calculated and disclosed in a manner designed to secure the lowest possible penalties under the relevant legislation.
How do you charge for your tax investigation services?
Given the unique nature of each investigation, Pure Tax Investigations typically operates on a fixed-fee or agreed project-fee basis, tailored to the specific scope and complexity of the case. This provides clients with cost certainty from the outset. An initial consultation is offered to discuss the case details and provide a clear fee proposal.
Alternatives
BlitzAPI Alternatives
BlitzAPI is a robust API toolbox that specializes in delivering clean B2B data to enhance the operations of go-to-market (GTM) teams. It is designed to streamline prospecting efforts by providing essential tools for searching, enriching contacts, validating work emails, and obtaining verified phone numbers. As businesses evolve and seek optimal solutions, users often look for alternatives to BlitzAPI to explore different pricing structures, feature sets, or compatibility with specific platforms that better fit their organizational needs. When considering alternatives, it is crucial to evaluate the quality of data provided, integration capabilities with existing workflows, scalability, and the overall user experience. Additionally, understanding the deliverability and accuracy of the data is vital for maintaining effective outbound and revenue operations. A thorough assessment of these factors will help users identify the best alternative that aligns with their unique requirements and goals.
Pure Tax Investigations Alternatives
Pure Tax Investigations is a specialist advisory firm in the business and finance category, providing expert defence for individuals and businesses facing serious HMRC tax disputes and investigations. Clients may seek alternatives for various reasons, such as differing budget requirements, the need for a specific geographic service area, or a preference for a different service model or firm size. When evaluating an alternative provider, key considerations should include the depth and relevance of the team's expertise, particularly any direct experience with HMRC procedures. It is also crucial to assess the firm's track record in handling cases similar to your own and the clarity of their service structure and fee arrangements.