Based on the discussion here: //http://forum.asamm.cz/viewtopic.php?f=10&t=769 I decided to split the UK parking. What I can do in this respect is very limited, but the Cloudmade site does have separate POI categories for England, Scotland, and Wales (also Northern Ireland, but I did not download that one). The only split I can do for England is a simple N-S (or E-W, but that makes little sense) so I split it on a line just south of Birmingham that does not go through the center of any major town or city. The S England category is still big, about 17000 points, but it's more manageable.
Note: when I imported it counted up through all the points OK, but then I got a FC warning (3 times in fact). Just select "wait". It will work eventually.
Note: when I imported it counted up through all the points OK, but then I got a FC warning (3 times in fact). Just select "wait". It will work eventually.