BlitzAPI vs Pure Tax Investigations

Side-by-side comparison to help you choose the right product.

BlitzAPI empowers your growth team with instant access to clean B2B data through powerful, scalable APIs for seamless.

Last updated: February 28, 2026

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Pure Tax Investigations

Pure Tax Investigations expertly resolves complex HMRC disputes, providing continuous support and peace of mind.

Last updated: March 1, 2026

Visual Comparison

BlitzAPI

BlitzAPI screenshot

Pure Tax Investigations

Pure Tax Investigations screenshot

Feature Comparison

BlitzAPI

Smart ICP Targeting

BlitzAPI employs advanced algorithms to help teams instantly identify and prioritize their ideal decision-makers. This feature ensures that you are connecting with the right individuals who can drive your business forward, streamlining outreach efforts and increasing conversion rates.

Verified Email & Phone Enrichment

With BlitzAPI, users gain access to verified and accurate emails along with direct phone numbers of prospects. This feature reduces the time spent on lead validation and enhances communication efficiency, ensuring your outreach efforts are based on reliable data.

Catch-All Email Validation

BlitzAPI offers real-time validation of catch-all emails with over 98% accuracy. This feature eliminates the guesswork associated with email outreach, allowing users to focus on quality leads and enhancing their overall email deliverability rates.

People Enrichment

This feature allows users to enrich company and profile data through a robust set of APIs. With BlitzAPI, teams can quickly gather additional insights about their prospects, enabling more personalized outreach and effective engagement strategies that resonate with potential clients.

Pure Tax Investigations

Specialist COP9 & COP8 Defence

Our team provides expert, robust defence for clients facing serious HMRC investigations under Code of Practice 9 (for suspected tax fraud) and Code of Practice 8 (for complex tax avoidance). We apply a deep, iterative understanding of HMRC's civil investigation of fraud procedures to negotiate the best possible outcome, often securing contractual disclosure facilities that protect clients from criminal prosecution.

Proactive Tax Disclosure Management

We specialize in managing and facilitating voluntary tax disclosures through HMRC's various campaigns and facilities, such as the Worldwide Disclosure Facility (WDF) and Let Property Campaign (LPC). Our process involves a continuous review of a client's position to ensure disclosures are complete, accurate, and presented in the most favourable light to minimise penalties and interest.

End-to-End Compliance Check Handling

From the initial information notice to the final settlement, we manage the entire lifecycle of an HMRC compliance check or enquiry. Our approach is methodical and adaptive, ensuring all communications and document submissions are strategically handled to reduce client stress and limit the scope of HMRC's enquiries effectively.

Expert-Led Strategic Advisory

Clients benefit directly from the unparalleled insight of Amit Puri, our director and ex-HMRC senior Tax Inspector. This frontline experience informs every aspect of our service, from anticipating HMRC's next move to crafting persuasive negotiation strategies. We continuously integrate this insider knowledge into our defence frameworks for superior, results-driven advice.

Use Cases

BlitzAPI

Efficient Lead Generation

Sales teams can leverage BlitzAPI to generate high-quality leads by integrating its services into their existing CRM systems. This leads to streamlined workflows and enhanced productivity as teams can focus on nurturing leads that have a higher propensity to convert.

Outbound Sales Optimization

Outbound sales teams utilize BlitzAPI to enrich their contact lists with accurate email and phone data. This results in improved outreach efforts, as representatives can connect with verified prospects, thereby increasing their chances of closing deals.

Market Research and Analysis

GTM agencies can use BlitzAPI for in-depth market research by accessing a wealth of B2B data. This enables organizations to identify trends, understand customer behaviors, and make informed strategic decisions to stay ahead of the competition.

Custom Outreach Campaigns

With access to enriched profiles and verified contact information, marketing teams can design targeted outreach campaigns. BlitzAPI ensures that communications are tailored to the right audience, maximizing engagement and response rates.

Pure Tax Investigations

Responding to an HMRC Code of Practice 9 Letter

When a business owner receives a daunting COP9 letter alleging suspected tax fraud, our specialists immediately intervene. We guide the client through the critical decision-making process, manage all communication with HMRC's Fraud Investigation Service, and work iteratively to prepare a meticulous disclosure report under the Contractual Disclosure Facility, aiming to settle the matter civilly.

For large corporates facing complex, cross-tax enquiries from HMRC's Customer Compliance Group, we provide a seasoned defence team. We analyse the enquiry lines, coordinate with the client's accountants, and develop a continuous strategy to challenge HMRC's assumptions and information requests, protecting the business from undue reputational and financial damage.

Making a Voluntary Disclosure for Offshore Assets

An individual with previously undisclosed offshore income or gains can use our services to make a voluntary disclosure via the Worldwide Disclosure Facility (WDF). We conduct a thorough review of historical data, calculate the tax liability, and prepare the disclosure package, applying our evolving knowledge of the process to ensure compliance and mitigate penalties.

Defending Against an R&D Tax Credit Enquiry

A company claiming Research & Development tax relief faces a rigorous HMRC compliance check into their claim. Our specialists dissect the technical and financial aspects of the claim, prepare robust supporting documentation, and engage in detailed correspondence with HMRC to defend the validity of the claim and secure the owed tax credits.

Overview

About BlitzAPI

BlitzAPI is a revolutionary API toolbox crafted specifically for go-to-market (GTM) teams aiming to optimize their prospecting efforts through access to accurate and fresh B2B data. This platform empowers teams to effortlessly search for and enrich contacts and companies, validate work emails, and obtain verified phone numbers, significantly enhancing their outbound and revenue operations. Designed with the principles of prioritizing data quality and deliverability-first practices, BlitzAPI serves as an essential resource for GTM agencies, outbound sales teams, and any organization aspiring to adopt scalable and repeatable playbooks without compromising data integrity. With seamless integration capabilities into existing workflows and a firm commitment to providing verified, high-quality data, BlitzAPI enables teams to elevate their operations while achieving superior results with reduced effort, making it a cornerstone tool for modern sales and marketing strategies.

About Pure Tax Investigations

Pure Tax Investigations is a premier specialist firm dedicated to resolving complex tax disputes and conducting rigorous tax investigations for business owners and entrepreneurs. We serve as an independent, expert buffer between our clients and HM Revenue & Customs (HMRC), providing robust defence during what can be an overwhelming and intrusive process. Our core mission is to deliver peace of mind, clarity, and certainty by navigating the intricate landscape of tax regulations with a tailored, discreet approach. We continuously refine our strategies based on the latest HMRC operational tactics, ensuring our defence methods are always evolving and improving for maximum client benefit. Led by Amit Puri, a former senior HMRC Tax Inspector with over two decades of experience, our team combines deep local knowledge with international tax expertise. We specialize in the most serious civil investigations, including Code of Practice 9 (COP9) and Code of Practice 8 (COP8), alongside managing compliance checks and facilitating voluntary disclosures through mechanisms like the Worldwide Disclosure Facility (WDF) and Let Property Campaign (LPC). Our iterative, client-focused process is designed to protect our clients' interests, preserve their wealth, and achieve the most favourable commercial outcomes possible.

Frequently Asked Questions

BlitzAPI FAQ

What type of data can I access through BlitzAPI?

BlitzAPI provides access to a wide range of B2B data, including verified emails, phone numbers, company profiles, and enriched contact information, ensuring you have the necessary insights for effective outreach.

How does BlitzAPI ensure data accuracy?

BlitzAPI prioritizes data quality through stringent validation processes and real-time checks, including catch-all email validation with over 98% accuracy, to ensure users receive reliable and actionable data.

Can BlitzAPI integrate with my existing tools?

Yes, BlitzAPI is designed for seamless integration with a variety of existing workflows and systems, allowing teams to incorporate its functionalities without disrupting their current processes.

Is there a free trial available for BlitzAPI?

BlitzAPI offers new users 1,000 credits for free, allowing them to explore and utilize the platform's features without any upfront costs or the need for a credit card. This helps teams experience the power of BlitzAPI firsthand.

Pure Tax Investigations FAQ

What should I do if I receive a Code of Practice 9 (COP9) letter from HMRC?

Do not ignore it or respond directly without specialist advice. A COP9 letter indicates HMRC suspects you of tax fraud. Contact us immediately. We will help you understand your options, typically advising to enter the Contractual Disclosure Facility (CDF) to make a full disclosure and gain protection from criminal prosecution, guiding you through every iterative step of this critical process.

How long does a typical tax investigation take?

The duration varies significantly based on complexity, ranging from several months for a straightforward compliance check to multiple years for a serious COP9 investigation or large corporate enquiry. Our role is to manage the process efficiently, responding promptly to HMRC to prevent unnecessary delays, while continuously refining our strategy to work towards a timely resolution.

What is the difference between a compliance check and a tax investigation?

A compliance check is a routine review by HMRC to check the accuracy of a tax return or claim. A tax investigation is more serious and invasive, often triggered by suspicion of significant error, avoidance, or fraud (like COP8 or COP9). We handle both, applying a scalable and adaptive approach, with investigations requiring a more robust, defensive strategy.

Can you help if I have already started dealing with HMRC myself?

Yes, we can step in at any stage. Engaging us early is always preferable, but we can often rectify situations where dialogue has become problematic. We will review all previous correspondence, take over communication with HMRC, and implement a fresh, strategic approach to steer the case towards a better outcome, learning and adapting from the initial interactions.

Alternatives

BlitzAPI Alternatives

BlitzAPI is a powerful tool designed to provide clean B2B data through its robust APIs, aiding go-to-market (GTM) teams in optimizing their prospecting efforts. This platform is ideal for organizations that require fresh and accurate data to enhance their sales and outreach strategies, ensuring they can effectively connect with potential clients. Users often seek alternatives to BlitzAPI for a variety of reasons, including pricing structures, specific features that may better fit their needs, or the need for integration with other platforms. When evaluating alternatives, it is essential to consider factors such as data quality, ease of integration, available features, and the ability to support your team's unique workflows and objectives.

Pure Tax Investigations Alternatives

Pure Tax Investigations is a specialist firm in the business and finance sector, focusing on resolving complex tax disputes and investigations for businesses and entrepreneurs. Clients may seek alternatives for various reasons, such as differing budget requirements, a need for more generalist accounting services, or a preference for a firm with a different geographical focus or service structure. When evaluating other providers, it's crucial to assess their specific expertise in serious tax investigations like COP8 and COP9, the direct experience of their lead consultants with HMRC procedures, and their proven methodology for managing disclosures and compliance checks. The right fit should offer a clear, iterative support process that adapts to your case's evolving demands. A continuous cycle of review and tailored strategy is essential in tax defense. Look for a partner that demonstrates a commitment to this approach, ensuring your representation is consistently refined to protect your interests and achieve the optimal resolution through every phase of engagement.

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