So sorry everyone... ive just got too much on my plate at the moment to do this properly.
It's not the printing of the tshirts that's the problem, it the considerable amount of time it takes gathering details, chasing money and then packing and posting out individually.
This isn't what we are set up to do at work, so all has to done 'by hand'. If there are any volunteers to help with this side of things would be a huge help, or i won't be offended if anyone else who is better positioned to do so does the tshirts instead.
Or if someone (or a few) could volunteer to collate payments, arrange and collect addresses, chase people etc and Basically do the admin which would take some of the weight off @dan125 that might help in Jan.