Drainage issue

At the join of the access alley way between the rear of the houses of Belgrave Road/North Street and the rear of Folkestone road there is a drainage issue during heavy rain - the current drain the the bottom of the hill between Belgrave Road and North street is overwhelmed which causes flooding/excess drainage to go into the gardens of the houses on Folkestone Road around number 213.

Although the alleys are not named I understand from my land searches when I purchased my house they are adopted and DDC does collect Fly Tipping from them.