I found this Sophos Ideas thread where Jon is quoted in January this year as saying:
We are testing an implementation of an "automatic self repair" capability. We hope to include it in an Early Access Program, perhaps as early as next month, with a view to it being included as a standard feature in the next mainstream software release, likely due around April or May.
It will check for missing or stopped services on each update, and start any stopped ones and trigger a reinstall for any that won't start or are missing. It will also re-checksum all files to look for file corruptions, downloading new copies of any that are found to be corrupted.
Just wondering if there has been implemented in early access or how it is progressing.
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