Here is the post code YO26 4XH

Just type that into google and you'll get a map with the very precise location.

The signs are not always large. Sometimes very small, with just the logo.

and if you click on satellite version I think the photo is the Hertz depot under construction and what seems to be a lumber/building yard next door.

Wow! Thanks folks. I took another look at the Streetview and I think janisj may be right. That looks like a good location for them and the place is to let in the picture. On the other hand, I see that Budget has an office just down the road at Leeman Road Auto Services so perhaps Hertz has joined them there :)
In any event, they should now be very easy to find.
Thanks again for all your help :)

Yelpir, I checked your photos in Egypt, Amazing!!! and Inspiring.
I am planning on a trip there but it astounded me how your trip was nicely planned.
Could you please share how did you know where are the highlights (the temples you visited for example), how to move around in a big country? How did you know the highlights in Cairo and how you moved around to get their? How many days it took you? Did you reserve all your stays before hand?

sfbay: your two posts are on quite old threads on the Europe forum -- you are asking yelpir about Egypt. see the link posted to your other post.