Thanks people! It had to be an automatic for my girlfiend, but it drives nicely and doesn't feel like I can't control what gear it's in.
I have found a windscreen washer cap on ebay but not cheap - in the mean time I have put some tin foil on it with a rubber band to stop debris falling down there and clogging things up.
About the power steering and transmission fluid levels - they seem to be full to the top and above the max lines, can someone tell me if this is ok or not and what the fluid should look like? The power steering fluid looks like warm tea when I remove the cap.
As to plans - we are going to use it for about a year after which we'll probably move abroad (we're students), but we plan to use it to travel around the UK and see some places, Scotland too. Would be nice to venture into the highlands but not sure if the Micra is suited to that! Still it seems to have a good reputation for relaibility and sturdiness.