In English Civil Law, are the two parties to a case allowed to contact
one another once a trial date has been set?  I ask because the other
party in the case keeps sending me letters which I find distressing
and harassment.

This relates to individuals.  Please do not reply with answers which
apply to committees or parliamentary protocols.  Thank you for any
help.

uk police officer- there is no reason why 2 parties cannot contact
each other unless it is forbidden by the conditions of the case. if
this occurs the judge/magistrate will have set conditions to which
either party will have to abide eg restraining order or conditional
bail.

if this is the case one or both parties will have been required to
sign or been served with papers outlining conditions.

alternatives-
under the harassment act 1997, if a person commits an act or acts
which cause harrassment alarm or distress on 2 or more occasions there
may be liable to prosecution under the act.

certain conditions apply- the person must know or ought to know their
behaviour will cause harassment,alarm or distress. the sending of
letters may constitute harassment. however if the other party sending
letters does not know their conduct is causing harassment they wont be
guilty. in other words you need to have told them to stop and they
continue same behaviour.

police will usually warn a person officially under the act to stop the
harassment or they may be arrested. a statement will need to have been
given to police.

this may be an alternative approach to add weight to your case, and
this may end in a criminal court not a civil one.