I have now watched the Press Conference. The reporting of it was not fake news. He said the 3 week grace period was over, and that trolley and basket searches were coming if people don’t change their behaviour. He also said his force would uphold the law (but seemed to be unaware that trolley and basket searches are not lawful).
The fact that his force had to issue a clarification, means he clearly got it wrong the first time.
https://youtu.be/j07oLkDYQPo