I have now received the policy, it is in the name of the company formed by the leaseholders and shows the excess of 500GBP, the policy wording is
“The EXCESS stated in the CERTIFICATE OF INSURANCE applied separately to each EVENT at each separate PREMISES”
I’m not sure this means each leaseholder is liable or that the excess is applied to each event that happens at each separate premises, so if a leak affects two flats then there will be 2 excesses applied. What does anyone think?