I signed up for a year insurance online. Apparently somewhere in the small print they said I signed up for auto-renew - though I usually read this stuff quite carefully so it must be well hidden and ticked by default. I came back from holiday and found an auto renew letter and they just took £90 off me to renew the insurance. No email. I called them to complain and they were not interested. Charged me £30 to cancel the policy. I assume this is illegal but probably they assume that most people are like me and aren't willing to undergo the stress and time of trying to get it back.