I seriously debated whether purchasing this card was justified for a trip to London, especially when the Nuvi would only be used in pedestrian mode. It was money well spent. Time is valuable when you are trying to see as much as you can, and countless times I used my Nuvi with this card to navigate the streets. The card contained some of the markers for the monuments in Hyde Park. You could zoom out and see the side streets to navigate to the closest tube station. Nuvi never lost a signal on the downtown streets either. The four star rating is only because I cannot vouch for its directions while driving, as I only used it in pedestrian mode.