I just want to come back to the initial query by the OP. The definition of bladed items as I understand by the post office relates to knives
IMPORTANT NOTICE: From 22 April 2024 we will be prohibiting ‘Knives or Blades’ defined by s141A Criminal Justice Act 1988 and ‘Bladed Products’ as defined by s41 of Offensive Weapons Act 2019 from the Royal Mail network. Currently, these items can only be sent using our Age Verification service and returned using Royal Mail Tracked Returns®. However, from 22 April 2024 sending and returning these items to UK destinations via any Royal Mail service will be prohibited, meaning that these items cannot be sent even if our Age Verification service is used. Our Age verification service will still be available for other age restricted items, including alcohol and, unless prohibited elsewhere, you can still send items not covered by the Acts.
These acts state "blades (length, samurai swords, lock knife) 1988 Act
And in the 2019 Act more specifically - see here.
https://nbcc.police.uk/business-support/knife-guidance/offensive-weapons-act#:~:text=The act makes it illegal,bladed items from the internet.
It appears to me that this does not include items such as chisels, or plane blades (or planes), but would include stanley knives and marking knives amongst other such woodworking bladed items.
So in general most of the time if we wanted to sell for example on eBay etc our surplus chisels, planes and planes blades we would be OK?
Am I correct?