Statutory declaration following a court case I did not know about

[Haywain]

So what basis are they allowed access on preventing and protecting crime? Because as I see it the full register can only be give to local authorities, law enforcement and the courts. Makes no mention on the ICO website of it being available to TOC's.
The open register which anyone can purchase you can request to be excluded from, as I do.

In this case the rail staff call an agency who confirm whether the details provided are on the electoral register or not, so it is not directly available to TOCs.