According to
this, the majority of people in the UK aren't fearful of catching the virus, and it's been that way since June. The most fearful point was at the end of March, just following lockdown, where 61% were worried about catching the virus. At that point only 7 of the 29 countries were less fearful. At this point only 5 countries are less fearful than the UK. That tracks pretty well with the fact that up until August, the UK were in the bottom quintile of countries for wearing masks, washing their hands more frequently, avoiding physical contact etc.
Germany were also in the bottom quintile on all of these, but given the comparative risk level in the two countries, the UK are proportionately much less fearful. Probably the best evidence of the lack of fear is this:
If people were overly scared, the majority of people who have symptoms and the majority of people that told by the NHS they were at high risk of contracting the virus would have self-isolated. That's what you would expect if they were appropriately scared, never mind too scared.