I've tried to be sensible and mindful of others during lockdown, but not everyone is. It's definitely become more lax and the traffic levels outside of the city centre are almost back to normal during the day.
I suppose we need to be more flexible, but there are always those who will take the piss at the first opportunity.
As I see it, the purpose of the lockdown should be twofold: first, so we dont break the NHS, and second we should be using the time to put together the infrastructure so we can aggressively test and trace people.
When you can effectively track the spread of the infection, you can target measures to combat it with more precision, and so avoid further general, blanket lockdowns that can only be a short term measure.
Without that, lifting restrictions will just allow the virus to roam free - and our numbers are already really bad even WITH lockdown.