Pulled over by police and charged for dangerous driving - what happens next?

Last night I was driving home from a friends about midnight. Near the end of the journey my heart sunk to see the flashing blue lights behind me. I pulled over and the police guys asked me to get into the back of their car. Unfortunately it appeared they had been following me for almost the whole journey :( seeing me overtake someone on a byp - they claimed I had been doing about 90mph. They had then followed me through a "resedential area" and claimed I had been doing over 40mph. (Which to my surprise seemed to be the thing they were most annoyed with and not the over taking) I tried to be as polite as I could and admitted I had been driving dangerously (in the hope they might just give me a warning or something). Unluckily however they decided they were going to charge me with dangerous driving and took my details and said alot of police mumbo jumbo involving court and whatever I say could be used against me etc lol. I'm just asking to see if anyone knows what I should expect next? I would rather just pay a fine than get points off my license :@ Additional details - I'm 19 and have had a clean license for about 20 months and I was completely sober on the night.