That's funny--I replied to this query about "burden" yesterday--my post must have got lost in the ether!

Anyway, it should be "gone for a Burton", a wartime saying meaning someone is in a bad way, gone missing, or (in most cases) dead. Burton tailors made good affordable suits for the working man. It's the same as saying he's "gone west" or "had his chips".

And yes, it should be "a right few quid" (quid being pounds, ie cash).

Thanks, Don