Here is a list of towns in the uk that begin with the letter d, you can place your council or housing association exchange in the one where you live.

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dagenham
dalbeattie
dalmally
dalry
darlington
dartford
darvel
deal
deeside
derby
dereham
devizes
dewsbury
didcot
dinas powis
dingwall
diss
dolgellau
doncaster
dorking
dornoch
douglas
dover
downpatrick
driffield
droitwich
dromore
dudley
dumbarton
dumfries
dunbar
dunblane
dundee
dunfermline
dungannon
dunkeld
dunmow
dunmurry
dunoon
duns
dunstable
durham