Hi alwayspuzzled,
16a is TARDIS (I thought a bit weak) with town => down.
3d clans => class (modern rhyming slang Douglas Hurd).
I have the 2nd word as AL?.
5d Juliet => Joliet (in America).
6d yes, fools => tools.
I took the instruction to mean ring individually similar to highlighting.
Hope this helps, you're luckier than me; I've been bald for quite some time !