You need to think of the containers that are stopped, inspected, and found to have nothing illegal. £200 would seem much less than the costs the police are causing by holding a container [0]. You're actually arguing for the government to cause even more damage, in retaliation for one small instance of the government having to partially compensate the victims of its actions. Frankly we should be moving in the exact opposite direction where the government correctly accounts for the harms it causes, instead of externalizing them in a reverse lottery.

[0] I welcome corrections on this, but I would think the commercial per-day storage fee is higher than £200