Claiming back a purchase …. how long have I got??

I purchased my AAT Level 2 & 3 from Home Learning college April 2010 but since then I have started my own Ltd company. Can I put the course on my purchase ledger, as its for the benefit of the company,reclaim the VAT and pay myself back the initial outlay of £3000 appx? It would be fantastic if I could.

Thank you for your help in anticipation.

Sharon Finnie