Yes they will. I have seen them remove disposables razors from carry bags in the past. You might get lucky but chances are they will find them. Then you have to look for blades when you get to your destination, etc....
Depends on how hard they are looking. I dumped a pocketful of keys and coins and an overlooked small pocket knife into my carry on before the xray on a recent flight. I was sure I was going to lose the pocket knife but they completely missed it. I got very lucky.
Yes they will. I have seen them remove disposables razors from carry bags in the past. You might get lucky but chances are they will find them. Then you have to look for blades when you get to your destination, etc....
https://www.heathrow.com/file_source/Heathrow/Static/PDF/Departures/Prohibited_Items_public_guidance_170311.pdf