I use Interparcel maybe 5 times a week for the last 18 months or so. On one occasion when using Parcelforce through Interparcel my customer remarked to me that 2 large holes had been cut through the brand new polypropylene sack. The sacks weigh 25 kg and maybe an extra 0.5kg surplus. The customer weighed the item and it weighed just over 21kg. My problem was with Interparcel customer services who didnt really care. She explained that she was going on holiday and that I should claim when she came back after I had collated proof of value , invoices etc and filled a load of paperwork in. So I hope she enjoyed her holiday at my expense as I quickly realised that it was going to take hours to find all the relevant before I even started to make a claim for a few quid so I gave up. I now use another courier for the more expensive sacks.