Setting up a limited company to lend to peer to peer?

Hi,

I just wanted to understand the rules around setting up your own limited company and lending to a peer to peer lender. The driver is of course tax! Apologies if someone has asked this elsewhere, I've had a look around but can't find it.

Is it as simple as the following or am I missing something very obvious...

* set up limited company with me as sole director and shareholder
* Lend my limited company money via a directors loan
* Lend money from the now capitalised company to a peer to peer lender
* Company receives interest and eventually repayment of principal (all being well!)from peer to peer lender
* company pays corporation tax on any profit (that is interest earned)
* Company pays me dividends from any profits (probably up to the £5k tax free dividend amount) and perhaps over time my original directors loan.

Would that work or can a company not just have lending as its only activity? If it can't would it be possible to lend through my own limited company that has a different core business?

Any thoughts very much appreciated. If anyone could direct me to any guidance even better!

Many thanks