Lost Power

[bouzel]

Was on my way to Leicester yesterday filled up a full tank and set on my way, an hour from Leicester doing about 80-90mph, it lost acceleration and never came back. You could press the pedal all the way to the floor and nothing happened. I managed to pull the car to the side of the road and the engine was chugging and the acceleration fluctuating the car didnt stall though. I restarted it again and it was fine for a bit, then lost acceleration again until I turned it off. This done it a couple times pulled into a petrol station started up the car again and it was fine, couldn't see anything obvious and been 1 o clock in the morning nowhere i could take it, also no breakdown cover so i continued my journey at a more slower speed of 50mph and it seemed fine however i could hear something rattling from inside the engine bay.
Any help would be appreciated as i won't be able to get this looked at tell Tuesday
Many Thanks
Anis