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UK households could face VPN 'ban' after use skyrockets following Online Safety Bill
(www.birminghammail.co.uk)
This is a most excellent place for technology news and articles.
Crazy because every (isp provided) router I have used has these options. They probably aren't 100% correct all the time, but it would be good enough for children (even though you shouldn't rely soley on filters to replace watching your kid).