What to look for in a TPS checker
Before diving into individual providers, here is what matters when choosing a TPS checking service:
- Pricing transparency --- Can you see what it costs before signing up, or do you need to contact a sales team?
- API availability --- Can you integrate checks into your own systems, or are you limited to a web portal?
- Phone intelligence --- Do you get additional data (line type, carrier, location) alongside the TPS result?
- Free tier --- Can you test the service properly before committing money?
- Batch checking --- Can you screen large lists efficiently, or are you limited to one number at a time?
- Compliance tracking --- Does the service help you manage the 28-day re-check requirement?
- Modern API standards --- REST/JSON with clear documentation, or legacy formats with limited support?
- Documentation quality --- Are there code examples, clear endpoint references, and integration guides?
With those criteria in mind, let us look at each provider.
TPS Services (tpsservices.co.uk)
Provider: Internet Web Telecom
TPS Services is one of the more established platforms in this space. It offers a fully automated online screening system for TPS, CTPS, and Fax Preference Service lists, with support for large file uploads and detailed compliance reports.
What they offer: - Bulk list screening via web portal - Real-time API access - CRM and IVR integration options - Audit trails for compliance evidence - Daily data updates from official registers - HLR/landline validation add-ons - DNC (Do Not Call) list management
Pricing: Credit-based. A free trial provides 250 credits. Minimum charge is around 5.10 pounds for 250 numbers. Volume pricing tiers apply, with credits that do not expire. Exact per-lookup rates are available via their account calculator.
Strengths: Comprehensive feature set. Strong on bulk processing for large lists. Supports recurring 28-day compliance screening. Well-suited to high-volume operations with complex needs.
Limitations: The platform is designed for larger business users. Pricing requires creating an account to see the full rate card. The interface and documentation lean towards enterprise workflows rather than quick self-serve integration.
TPS Checker (tpschecker.co.uk)
Provider: Quartz Data Services
TPS Checker offers one of the more accessible entry points in the market. Their free tier allows 10 checks per day without purchasing credits, making it a common first stop for businesses exploring TPS compliance.
What they offer: - Free online single and small-batch checking - Credit packages with bonus allocations (30% loyalty bonus) - Excel add-in for desktop users - Basic API for automation - TPS and CTPS checked automatically
Pricing: Free for up to 10 checks per day. Paid credit packs range from 4.25 pounds plus VAT for 325 checks up to 35 pounds plus VAT for 6,500 checks. Credits never expire. Payment via card, PayPal, or invoice.
Strengths: Low barrier to entry. The free daily checks are genuinely useful for very small operations. Credit packages are affordable for occasional use. The loyalty bonus on credit purchases adds value.
Limitations: The free tier of 10 checks per day is restrictive for any regular business use. The API and Excel add-in are basic compared to modern REST standards. Limited phone intelligence beyond TPS/CTPS status. Documentation is minimal for developers.
121ProData (121prodata.co.uk)
Provider: CAPI
121ProData offers a straightforward self-service portal for TPS and CTPS checking with both single-number lookups and bulk CSV uploads. The service is designed for simplicity and pay-as-you-go flexibility.
What they offer: - Single-number lookup via web portal - Bulk checking via CSV/TXT file upload - API endpoints for single and batch checks - Automatic TPS and CTPS screening in one check - Auditable screening logs per account - 24/7 portal access with daily data updates
Pricing: Pay-as-you-go credits with no minimum order. Pricing scales with volume: approximately 3 pounds for 1,000 checks (0.3p per number), falling to around 0.15p per number at 100,000 credits. Bulk packages include bonus credits. Unlimited usage subscriptions are available on request.
Strengths: Competitive pay-as-you-go pricing, especially at volume. No minimum order means you can start small. Both TPS and CTPS are included in a single check at no extra cost. Credits do not expire.
Limitations: No free tier beyond account signup. No CRM integrations mentioned. The portal focuses on basic TPS/CTPS status without additional phone intelligence data. API documentation is limited.
Data8 (data-8.co.uk)
Provider: Data8 Limited
Data8 is an enterprise-grade data quality platform that includes TPS and CTPS screening as part of a broader suite of validation services. They are well-known in the Microsoft Dynamics ecosystem.
What they offer: - TPS and CTPS screening as part of data cleansing suite - Real-time API and batch processing - Deep CRM integration (Salesforce, Dynamics 365, and others) - Address, email, and bank validation alongside phone checks - Daily updates from official registers - Deceased suppression data - UK support and GDPR adherence
Pricing: Not listed publicly. Available on a per-lookup basis or via annual licence. Contact for pricing.
Strengths: Excellent CRM integration, particularly with Microsoft Dynamics 365. Comprehensive data quality platform if you need more than just TPS checking. Enterprise-grade with audit trails and rules automation. Strong for organisations already in the Microsoft ecosystem.
Limitations: No public pricing. No free tier. Primarily aimed at mid-to-large businesses. TPS checking is bundled with wider data services, which may be more than smaller businesses need or want to pay for.
CallValidate / Datatopia (callvalidate.co.uk)
Provider: Datatopia
CallValidate, part of the Datatopia suite, provides phone validation and TPS screening services aimed at data quality and compliance. The platform combines number validation with preference service checking.
What they offer: - Phone number validation and TPS/CTPS checking - Batch processing via web portal - API access for integration - Number type identification (mobile/landline) - Network and carrier data
Pricing: Contact for pricing. Typically per-lookup or volume-based.
Strengths: Combines number validation with TPS checking in one service. Useful if you need broader phone data cleansing alongside compliance screening.
Limitations: Pricing is not publicly available. Less focused specifically on TPS compliance compared to dedicated TPS checkers. Documentation and developer resources are limited compared to API-first providers.
DataSoap (datasoap.co.uk)
Provider: DataSoap
DataSoap is a comprehensive data quality platform that includes TPS and CTPS checking alongside a range of other data cleansing services. They position themselves as a one-stop shop for data hygiene.
What they offer: - TPS and CTPS bulk list screening via portal or API - Flagged results including opt-out dates per number - Outlook plugins for on-the-fly checking - DNC, MPS, and additional validation services - Daily register updates
Pricing: Not explicitly stated online. Marketing materials reference batch TPS checks "from as little as 75p per 1,000 numbers." A pricing calculator is available on their website. Contact for custom quotes, especially for API access and large volumes.
Strengths: Broad data quality offering. The Outlook plugin is a nice touch for sales teams doing ad hoc checking. Returns opt-out dates alongside TPS status, which is useful for compliance records.
Limitations: Pricing is not transparent upfront --- you need to use their calculator or contact sales. No clear free tier. The TPS checking is part of a larger platform, which may add complexity if you only need TPS screening.
TPS Unlimited (tpsunlimited.com)
Provider: 3G Telecoms Group
TPS Unlimited takes a different approach to pricing: flat monthly subscriptions with unlimited checks. For high-volume operations, this removes the per-lookup cost entirely.
What they offer: - Unlimited monthly TPS and CTPS screening - Web portal and API access - Excel add-in - File upload and download (numbers flagged as on/off TPS) - Daily data updates - High throughput (up to 1 million checks per minute claimed)
Pricing: TPS checks: 150 pounds per month (unlimited). TPS plus CTPS: 200 pounds per month (unlimited). A 10% discount applies for annual commitments (1,620 pounds versus 1,800 pounds annually). No per-lookup charges.
Strengths: Genuinely unlimited checking at a flat rate. Very appealing for call centres and high-volume operations where per-lookup costs would be prohibitive. The pricing model is simple and predictable.
Limitations: The flat rate of 150 to 200 pounds per month is expensive for businesses with moderate volumes. No free trial mentioned. Limited phone intelligence --- the focus is purely on TPS/CTPS status. Documentation and developer experience are basic.
TPSCheck (tpscheck.uk)
Full disclosure: This is our service. We will describe it using the same criteria as every other provider on this page.
TPSCheck is an API-first TPS and CTPS checking service built for developers and businesses who want to integrate compliance checking into their own systems. Every check returns phone intelligence data alongside the TPS result.
What we offer: - TPS and CTPS checking via REST API - Phone intelligence included with every check: line type (mobile/landline), carrier, geographic location - Batch checking for up to 100 numbers per request - 28-day compliance tracking dashboard (Growth plan and above) - Audit logs and downloadable compliance reports (PDF/CSV) - Webhook notifications for batch completion - Multiple API keys for teams and projects - Token-based authentication with rate limit headers - Comprehensive API documentation with code examples
Pricing: Fully transparent and published on our website. Free plan: 50 checks per month with API access, no credit card required. Subscription plans: Starter at 29 pounds per month (10,000 checks), Pro at 79 pounds per month (50,000 checks), Growth at 149 pounds per month (150,000 checks), Business at 199 pounds per month (500,000 checks), Enterprise from 249 pounds per month (custom volume). Pay-as-you-go credit packs from 4 pounds for 1,000 checks. All subscriptions offer 17% discount with annual billing. Credits never expire.
Strengths: API-first design with modern REST/JSON standards. Phone intelligence (line type, carrier, location) included free on every plan, including the free tier. Transparent pricing published upfront. Free tier with genuine API access for evaluation. Compliance features (28-day tracking, audit logs, reports) built in from Pro tier upwards. Self-serve signup without sales calls.
Limitations: Newer to the market than some established providers. No desktop application or Excel add-in. No CRM-specific plugins (Salesforce, HubSpot, Dynamics) at present --- integration is via the API. The free tier is limited to 50 checks per month, and batch checking requires a Starter plan or above.
See our full feature breakdown and product guide for more detail.
Side-by-side comparison table
This table compares key features across the providers covered in this guide. Where pricing is not publicly available, we have noted "Contact for pricing" rather than estimate.
| Feature | TPSCheck | TPS Services | TPS Checker | 121ProData | Data8 | DataSoap | TPS Unlimited |
|---|---|---|---|---|---|---|---|
| Pricing transparency | Published on website | Account required for full rates | Published credit packs | Published per-credit rates | Contact for pricing | Calculator / contact | Published flat rates |
| Free tier | 50 checks/month with API | 250-credit trial | 10 checks/day | No | No | No | No |
| API availability | Full REST/JSON API | Yes | Basic API | Yes | Yes | Yes | Yes |
| Modern API (REST/JSON) | Yes, with rate limit headers | Varies | Basic | Basic | Yes | Yes | Basic |
| Phone intelligence | Included free (all plans) | Add-on (HLR validation) | No | No | Part of wider suite | No | No |
| Batch checking | Up to 100 per request | Yes (file upload) | Yes (file upload) | Yes (CSV upload) | Yes | Yes (file upload) | Yes (file upload) |
| 28-day compliance tracking | Built-in dashboard | Supported | No | No | No | No | No |
| Audit logs | Yes (90 days to 24 months) | Yes | Usage logged | Yes | Via CRM integration | No | No |
| Compliance reports (PDF/CSV) | Yes (Pro and above) | Yes | No | No | Via CRM | No | No |
| Documentation quality | Comprehensive with code examples | Moderate | Minimal | Limited | Good (CRM-focused) | Limited | Minimal |
| Pay-as-you-go option | From 4 pounds/1,000 | Credit-based | From 4.25 pounds/325 | From 3 pounds/1,000 | Contact for pricing | Contact for pricing | No (subscription only) |
| Unlimited plan | Enterprise (from 249 pounds/month) | Contact for pricing | No | Contact for pricing | Contact for pricing | Contact for pricing | From 150 pounds/month |
How to choose the right TPS checking provider
There is no single "best" TPS checker. The right choice depends on your specific situation. Here are honest criteria to guide your decision:
Consider your volume
If you check fewer than a few hundred numbers per month, a pay-as-you-go service or a generous free tier will serve you well. If you process hundreds of thousands or millions, a flat-rate unlimited plan or enterprise agreement makes more financial sense.
Think about integration
If you need TPS checking inside an existing CRM like Salesforce or Microsoft Dynamics, a platform with native plugins (Data8, for example) may save development time. If you are building your own tools or want to integrate compliance checking into custom workflows, an API-first service with strong documentation will be more practical.
Evaluate what you need beyond TPS status
A basic TPS/CTPS yes-or-no answer is sufficient for many businesses. But if you also need to know whether a number is a mobile or landline, which carrier operates it, or where it is located geographically, look for a provider that includes phone intelligence without charging extra for it.
Check the compliance features
The ICO expects you to re-screen numbers at least every 28 days. If your provider does not help you track when numbers were last checked, you will need to manage that process yourself. Audit logs and exportable compliance reports are valuable if you ever face an ICO inquiry.
Assess pricing transparency
If you cannot see what a service costs before creating an account or speaking to a sales team, factor that into your evaluation. Hidden pricing is not inherently a problem, but transparent pricing lets you compare and budget without friction.
Try before you commit
Wherever possible, test a service with real data before paying. A free trial or free tier that gives you genuine API access --- not just a demo --- lets you evaluate the actual experience, response times, and data quality.
Start with TPSCheck --- free, with no commitment
If you are still evaluating options, TPSCheck gives you a free tier with 50 checks per month and full API access. No credit card required, no sales call needed. You can test the API, see the phone intelligence data, and evaluate the documentation before spending anything.
When you are ready to scale, subscription plans start at 29 pounds per month, or you can purchase pay-as-you-go credits from 4 pounds for 1,000 checks.
Read the API documentation | View pricing plans | Explore the product guide
TPSCheck is an independent commercial service operated by Visian Systems Limited. It is not affiliated with, endorsed by, or operated by the Information Commissioner's Office (ICO), TPS Limited, or the Data & Marketing Association (DMA). All competitor information in this guide was gathered from publicly available sources and is accurate to the best of our knowledge as of February 2026. If you represent a provider listed here and believe any information is inaccurate, please contact us and we will correct it promptly.
