A possible danger with Land Promotion Agreements ?

The rise of the land promoter has been a good thing for farmers and landowners across the UK but whilst this holds true for the largest, most well-established and funded promoters, what about the raft of smaller companies that have sprung up ?

The danger here lies in the actual agreement itself as should the land promoter fail then it is worth bearing in mind the landowner may well have signed-up to perhaps a 5 or 10 year (or the ever popular '5y+5yr+5yr' land promotion agreement) period and as such if the land promoter goes into bankruptcy then what are the legal implications for whether the deal can be transferred ?

The Option Agreement does not have this problem and is of course usually taken out with a large, well funded plc housebuilder.

But with the potential ahead for economic problems in the UK, should unemployment rise significantly and / interest rates climb then house sales will suffer and the housebuilders will reduce their need for buying land from land promoters - can smaller land promoters really carry the cost of perhaps several large planning applications with no realistic end sale result in sight ?