Hi Luke,
There is a nightclub on Park campus as well as a bar and a Pavilion that are always hosting events such as celebrity appearances, comedy nights, club nights, society events,
There are also plenty of student night clubs in town and students frequently start at the SU and head into town later on in the evening,
A taxi would cost £6 on average from Park SU but obviously you can spread this cost between 4-6 people,
Taxis are very accessible 24 hours,
Any more questions do not hesitate to ask,
Kilian