You could always try the Tenant Farmers Association (TFA) as they might know about small farms to rent. Also, the local County Councils sometimes have land to rent. I'm sure you're well aware - but competition for small places can be intense as there are not many of them available and a lot of people looking for them!
Be interested to hear what, as a relative newcomes to farming, you've found you most and least like about it...
For a round-up of quirky rural news see my blog
Field Day