I too had this worry, as whilst a youngster I had been convicted of possesion of an offensive weapon(baseball bat), threatening behaviour and a serious driving offence.
These were 18 years ago but I thought it would be worth trying for an FAC as I am surrounded by fields and have shot rabbits for 30 years with an air rifle but wanted a rimfire for a better kill and longer range.
With my application I enclosed two seperate A4 sheets explaining exactly what and why I had behaved this way and that it was such a long time ago I was still truley remorsfull and had grown up, now having a res