Parking near MK Central Station

[rswift]

Anyone know if there is somewhere that I could leave a car for best part of a week near MK station, or walking distance ?

I need to go to Glasgow next week, and the best option I have is a 6.30 AM train on Tuesday, but I will travel back with a mate on Sat night. Just wondered if anyone had any ideas, I'll just be leaving my old Jeep, so it's nothing precious.