Katie - I'm not sure of the date but I sort my clubs out before Christmas and tell the lucky person to post it immediately.
If you sent it a couple if days before the closing date I hope they get it in time. I once had a nightmare where I was late applying got my gfa and it didn't arrive before I left for holiday. When I returned home on the Thursday night it had come with a letter if apology from Royal Mail as it had been damaged and lost in the system. The closing date was the following day! I phone FLM (as it was then) and they would not accept it. I posted it anyway with the cheque and all the evidence but still they wouldn't budge.

. I'd check the cheque has been cashed or phone them (contact number is on the website).
Good luck - I guess you've got all the training done now and could do without this worry.