you tripped over a speed bump~?
these are smooth, wide and long and only about 6" high - how did you trip? were you drunk?
i expect you should have been looking where you were going... as we all have to do when negotiating those tricky pavements and roads... would you expect compo if you tripped over a kerb?
they didn't just appear at night so must have been there for at least most of the day, with workmen working on them.
it is his land and for him to have installed speed bumps must be because he feels you ride accross his land too fast - he wouldn't install them for himself would he...?
you seem obsessed with sueing this neighbour of yours - there are numerous questions from you asking how you can get money off this person.
so, you can understand why we perhaps don't believe your account of events.