You can apply, when you get there, to have your product screened.
This then allows you to take 'dodgy' stuff on the plane
I did this on my way to the us with a toy gun. However this was for stowed stuff and they wheel it off
best bet is to ask BA as it ****es me off when they won't let me take my travel guitar onboard, yet it's ok for kids to walk on with a witches broomstick!!!!!!!!!!!!!!
Best bet is to ask and arrive early just incase you get some jobsworth ahole checking you in
No matter what we say here, it's the airline who have the final say.
Some days I could take my guitar, other days I had to unstrung it, other days, no chance!
All depends on the people there.
Ask BA, get a letter maybe and go for it early.
Or others may post they do it fine