UK Print Affiliates WHERE DO I FIND THEM!?

Its a tough one to crack when starting out and being "unknown" so to speak, If i were in your position id be doing a bit of outreach to potential affiliates, people with related but not competing businesses or blogs.

Much like you are doing now there is always room for asking around in a non spammy way in business forums and doing a bit of networking with people you feel maybe a good fit , whether it be because you've seen them promoting a product very similar or whether its because their website has the audience your targeting .

You'll find once you get some people on board and the banners are seen in places of authority that affiliates will start to try you out but to begin with it will be mostly you doing alot of out reach.

Another thing to consider is that many site owners dislike Affiliate programs because they are taking up real estate of which a direct banner sale could be occupying, You might wish to research a couple of websites and purchase direct advertising with an affiliate link to track the sales generated and then decide whether its worth reaching out to that site owner with the figures you've collected.

Obviously you really want the affiliates which spend good money on advertising their links on facebook, adwords etc but they only come when the commissions and sales model warrant it.

P.s , Ive tweeted this thread for you, hopefully you may get some more responses or indeed some interested parties .