Photos for commercial usage.

I've been asked to get some photos of an airfield for the Estate Management, this came from a call I put to them to ask permssion to visit the site again, which they granted and then the question was asked whether they could have copies of the pictures taken.

The photos i've taken in the past would not be suitable for their usage, however I would take pictures specifically for them.

I've got no problem with doing this, however what is everyone elses thoughts on this.

This seems straight forward enough to me, permission to visit a site which you would not normally have access to in return for a record of what you have done. It is a bridge building excercise we should probably encourage.