Creating a national brand can be done really easily using my method of creating an in app experience. Since all the information related to the items in the museum are stored on a database the information can travel really easily, all that would need to be sent would be the actual exhibition pieces. The current government budget for museums is £5.4 Billion, if the cost of transporting exhibitions around the country was cut then the money could better spent on other things like the content of the exhibitions etc.
It would also change what traveling exhibitions look like, instead of having pop up stands, they would look like they actually belong in the museum!
References;
http://www.nationalmuseums.org.uk/news/newsletters/?item=106