My flat has large water stains on the ceiling, it is tenanted, I contacted the flat above us, turned out to be a faulty radiator valve slowly dripping unnoticed. Now my tenant asks for compensation for the disturbance, and there is repair work yet to be done in my flat, can I claim the compensation and repair work from the upstairs owner for causing the damage? What can I claim from the upstairs flat, I.e mine & my tenants' time off work dealing with this. Thanks