Just for the record.
Thus far, the suspects' identities were revealed.
A Russian active measures agency aka RT/Russia Today/Sputnik presented the most ridiculous version ever: the men are businessmen (without biographies or relatives, friends, neighbors, clients or anyone else who would sell info to newspapers) who spend entire weekend just to see the Salisbury Cathedral.
It was revealed that, inter alia:
the suspects' passport dossiers contain "top-secret" markings;
a man having similar passport was involved in the 2016 coup plot in Montenegro;
some persons with similar passports indicated on different documents that their home address was 76B Khoroshevskoe Highway - GRU’s Moscow HQ.
Wondering what Russia apologists think about this.
Links:
https://meduza.io/en/feature/2018/09/23/yeah-it-s-the-gru-hq-so-what