I also believe if the OP is a UK citizen then sending him iPlayer files would be more of a legally grey area.
I dunno, that seems pretty clear cut..
BBC Online Terms of Use 3.2.3 (d):
"you may not, and you may not assist anyone to, or attempt to[..], copy, reproduce, lend, hire,[..] broadcast, distribute,[..] transmit or otherwise use in any way BBC Online Services and/or BBC Content in whole or in part"