So the reality will be that each target will have a different likelihood / cost quotient, where the denominators are somewhat knowable, but with the numerators still basically wild guesses.
Hazarding a wildguess at the potential value of their sites, extracting Norish's pre-Townview net equity of GBP 7.9 mio seems very achievable (basically equating to GBP 16.5 mio of property, plant & equipment, less GBP 8.4 mio in loans).