Work is underway to demolish a block of council flats to make way for a £12million development. Permission was granted to knock down 26 apartments in St Patrick’s Gardens and St Columba’s Close, Gravesend, by Gravesham council last year. Pictures of the site this week show mountains of rubble and bricks piling up next to a half-standing block of flats as the units are demolished by contractors Greenfield. The council will be replacing the apartments and houses with 46 new properties including 34 flats, six houses and six maisonettes to create more family accommodation. Of the new homes, 26 wil…