You can secure a career loan of GBP8,000 tops through Barclay's Bank. A friend of mine said the other day that it has meanwhile been raised to 10k. I haven't checked on this myself so cannot confirm or disconfirm. BB will transfer the money straight to the training provider's bank account. Payments can vary and usually start two months after payout.
Alternatively, go get hired and have at least two pay checks paid into your bank account. Along with a clean credit history you should not have any problems with securing a loan. But beware, I would calculate with EUR40k as there are a lot of hidden costs. You might also be put on hold after your TR for a couple months or so and during that time will not generate any income but still need to eat, etc.
And lastly the safest way of doing it is to do it the old fashioned way and work your ass off for a year and save most of what you earn.