If only that were the case. I belong to a group of hobbyists that tried that tactic for more than a decade, with assurances from central government that they had no plans to introduce legislation that would affect us.
Since 2000 three wide ranging laws have been enacted which have all but decimated our hobby. Why? Because those who would see us prevented from carrying out that hobby countered our low-key stance with a high profile anti- campaign.
The unfortunate consequence is that these new laws affect every person in the UK, whether they want to engage in that hobby, or not. Any legislation intended to prevent photography in public places will likewise affect every person in this country - whether they own a camera, or not - and will be yet another nail in the coffin containing our freedoms.
<puts soap box away>