Life / rules and regulation for marrying a polish girl [68]

I'm getting married to my polish girlfriend after two month so would like to know how is it possible?

i'm a non eu national and my girlfriend in polish
i'm here on student visa ( two years left to expire)

can you guys tell me if i can marry her in Uk or need to go poland? If i want to marry here

where i need to go?
what documents required ?
and how long will it takes?

i'm not intrested to get polish citizenship
only marrying her because she is forcing me to marry her as soon as possible and even her family. don't know real reason behind it...