Anyone know what this font is?? I'm sure I've used it in the past... but can't find it!

Futura  Suggested by pilaster 

Futura?

It is a lot like Futura - but something's telling me there's a font that specifically has the overlap built in... I may be wrong.

Cheers for the reply though, maybe it will be quicker for me to use Futura!

It's possible, but think of the complexity. Each character would need a glyph to 'cut out/overlap' each and every glyph in the font...
IMHO Probably a stroke applied to the Characters and then the cutout/overlap achieved by where the letters fall in layers. So;
in Ol' DIRTY 'R' and 'Y' have an outside stroke and sit above 'T'. Letters are tracked/kerned in tight for the overlap.

You're right, thank you