\x95Mozilla/4.0

[keyplyr]

Seen this occasionally. Yesterday from:

87.80.0.0 - 87.87.255.255
Easynet Limited, GB

Research Machines, GB
194.154.16.0 - 194.154.23.255

I suspect this is a link checker from a school system. It took only index page, no accompanying files. No robots.txt.

[dstiles]

I get a fair few bad hits on Research Machines lines from schools and similar so you could be right.