[Steve PH]

A couple of slightly left field suggestions...

If your daughters into the fashions that go with punk and rock etc, then the Camden markets are definitely worth a look around.

http://www.camdenlock.net/camdenmap/map.html

And the small music stores that line Denmark St (nick named Tin Pan Alley) are well worth checking out.

http://www.multimap.com/map/browse.cgi?client=public&GridE=-0.12902&GridN=51.51555&lon=-0.12902&lat=51.51555&place=Denmark%20Street%2C%20LONDON%2C%20WC2&db=GB&scale=5000&search_result=Denmark%20Street%2C%20LONDON%2C%20WC 2&lang=&db=GB&keepicon=true