I have previously used Aircoach on many occasions using the Dublin to Belfast route. On Monday past, 3/06/2024 o travelled on the 3pm bus from Belfast to Dublin, the driver arrived 2 minutes before departure, dressed very shabbily and his driving was atrocious, he constantly drove with one hand biting the nails of the other hand continuously driving over the middle section and inner section of the road which he had to over correct which was very unnerving, the radio was blasting and he was bobbing up and down in the drivers seat, his left leg never stopped shaking as if he was on something !!! I sat at the very front of the bus so I witnessed all these things along with other passengers, I never write complaints ever but I was seriously worried about my safety, this man should not be driving a bus !!!