text: I have added some buildings visible in bing's satellite view but the images are not very clear so please check them. There is I think another building south of Old Kenton Lane but it is too fuzzy to map properly and I can't make out where the slip road might be. If you want to add that, or more detail such as house numbers, the best answer is to become an OSM editor and add the information yourself -- see https://wiki.openstreetmap.org/wiki/How_to_contribute