Shipping in France

Can anyone give me advice or recommend on any couriers or shipping sites that are alot cheaper than collissimo? I want to ship to the UK or USA from small packages to larger items and I am shocked at the prices here.....16 euros for a small packet to the UK. I can get a 30kilo box(equivalent of approx 2 suitcases) delivered here door to door form the UK for £20.

Parcels Please ship from the UK to here and from here to the UK - 30 kilos £12.00. You can pay for extra insurance if you wish and they use UPS as well as another provider - I find them to be helpful and very efficient. (Prices stated were those quoted in December 2010).