just a thought ........ i really ( personally ) wouldn't go down the " going to court route " ...... it really will take over your life, make you sad and unhappy ( unless you're a masochist ) and if you do eventually win, or after years the other insurers settle " out of court " you will be so relieved and really, really wish that you had settled amicably at the outset, possibly some years earlier !!!
Courts are for giving the lawyers loads of dosh ..... to be avoided for your own peace of mind and sanity !
Chill out, de-stress and reflect ......... before you go hammer and tongs and headlong into that dark abyss.
Malc