TRIPPITEE

Evening folks,
I've been a bit of a plonker here.
Did a quick search,couldn't find a related thread.
Basically...just topped up my oil then nipped out to the cashpoint.Got there and found an oily right leg and boot and no filler cap(doh!)
Journey was 2 miles max.There was a little oil left when I realised and then rode home very gently.
Have walked back to cashpoint and searched the garden and driveway-no cap to be found.
Bike is already booked for 7500mile service tomorrow.

2 questions
1. Have I f*~ked the engine up.
2.If not any ideas for a bodge to get me to the bike shop tomorrow.

Now approx 1 litre of oil in the bike.

Chris