We find giant bubble rap helps with bottles & cans, often it helps to put a box within a box too.
However - no matter how good you pack em if your courier dosent take care they wont make it.
Parcelforce are pretty good but lately certain depots seem to be trying their best to damage the parcels.
we sent 20 cartons of soya milk out in one delivery and 8 of them burst destroying some other items in the parcel.
we did spend quite some time trying to burst a carton of the stuff and it took alot of force. How they did it when it was securely rapped Ill never know.
they also seem to have taken a fancy to puncturing parcels lately
I know some couriers specialise in certain goods such as wine bottles etc
worth contacting them all to see what they can offer
G
G