General pitched roof maintenance.
Repairs to stone roof, chimney & lead flashings to remedy leaks at the party wall.
Excess water traffic getting in at the ridges line & broken slates over the years has caused under felt failure leading to leaks. The only way to fix this is to take the roof apart in the areas where it is leaking.
Installation of eaves support drip trays & new under felt to prevent further leaks & damp in the property.