Datasets published by the EIDC are assigned a DOI (Digital Object Identifier). A DOI is a permanent, globally unique identifier which unambiguously identifies the data resource and so assists with citation.
A DOI consists of a string of characters divided into two parts, a prefix and a suffix, separated by a slash.
The prefix identifies the registrant (10.5285 is the prefix for NERC) and the suffix is a unique string identifying a specific dataset.
You can "resolve" a DOI by appending it to https://doi.org/. For example, https://doi.org/10.5285/a6e37e39-9e10-4647-a110-12d902403095