Data Matching Service

25 years’ experience in algorithmic data matching

Got several lists when you only want one? 

As part of our data warehousing heritage, CSL has been creating and developing matching algorithms as part of a wider Master Data Management strategy for many years. 

We realise that there are several layers to the challenge, and it’s not just a case of postcodes not quite matching up.  Different data suppliers often classify entities in different ways, and data quality can vary greatly. 

 CSL has developed score based matching algorithms to assess potential pairings from all available candidates, using decision criteria to assign potential matches to your master list.  These can be used in a variety of situations. Recent projects include: 

  • Regular matching of 20+ wholesaler sources to a master list of accounts for a leading medical devices supplier
  • Monthly matching of homecare accounts for a top 5 pharma company
  • Projects to migrate CRM systems from one master to list to another
  • Person and address matching for a leading fraud prevention organisation 

Our tools deliver both of the common phases of list matching effectively and efficiently:

  • Automated comparisons to match the majority of match-able records
  • Score based suggestions to speed up the manual mop-up phase


Award-winning data analytics across health, pharma and related industries

Fully compliant with global data security processes - ISO 27001 certified

Expertise across numerous award-winning software platforms

Bespoke health data insights delivered at speed – we listen and we get results

Agile, responsive approach built on personal relationships with talented consultants