Hmm, I could recommend a stranger from the internet, but there's too much risk and not enough upside in it for me.
Your post makes it sound like you would be difficult to work with:
* You come across as having an overinflated sense of worth ("I'm so desperately underpaid").
* You seem to have a poor work ethic ("a great work-life balance [is my] highest priority").
I would be concerned that you would not pull your weight in a team and would not provide a good return on your salary. As a result, you would make my team look bad, dilute our productivity and, by overpricing yourself, leave the firm with less money to give to me.
The risk-weighted downside to my end-of-year bonus far outweighs the referral prize. As such, I disagree with your fundamental premise that this is a "win-win" and decline your proposition.
In order to improve the success of future personal marketing campaigns, you might like to consider the following:
* Emphasising what you are going towards, rather than what you are leaving from. At present, you give a strong impression that you are looking for an exit from your present situation but haven't thought about how you will ensure your next enterprise is more successful and fulfilling.
* On a similar note, emphasising strengths above weaknesses. As outlined above, your current pitch implies a number of personal flaws. It's great to be honest about areas you are not strong or interested in, but it's more important to be clear about what you have to offer.
* Reviewing the financial terms of your deal. You are very specific about how much you want (£60k+), but you don't seem to have thought about the other side of the equation much. How much is a referral bonus worth? What is this value relative to your earnings growth?
* Reviewing the risk in the deal. You can mitigate some of the risk passively by tightening up your proposal, as described above. You can also mitigate risk actively, for example by providing a guarantee that you will remain in post for at least the period necessary to validate the referral bonus. Remember that any prospective partner already has a good job, whereas you are looking for one, so the risk burden is already on them.
* Making yourself available. You could do with providing background information, or contact details to obtain background information, that would allow prospective partners to perform some due diligence. At present, any prospective partner is required to release their personal details in a public forum and await your contact if they want to discuss the deal with you. If you want to be contacted, and don't want to appear half-hearted about the deal, you have to make yourself available. You can set up a temporary anonymous address for this purpose.