One of, if not the best, spotters airports is Manchester (MAN)
The airport provides a dedicated spotters park near the end of the main runway. This area has parking facilities for 100's of cars.
For photography there are raised mounds so that the airport fence doesn't get in the way, thus there's a clear view of the runway and taxiing areas.
This is currently a temporary area whilst the new runway is being built, it is in fact the second area that has been provided, the original had to be moved because of the new runway.
There is also a shop provided by the local aviation society that stocks all kinds of memento's, photo's books etc.
Unfortunately the ramp areas can't be seen but this is more than made up for by the view of the runway, aircraft land or lift off right in front of you.