This is such a weird question. We used to live in a similar Redrow, but I'd say us and most of our neighbours were working class people who happened to have done reasonably well for ourselves. Not sure having a big house can actually make you middle class?
Where we live now I would definitely say most of our neighbours are middle class - old houses, older cars, spaniels and labradors as pets, posh accents, pianos and shelves full of books. We bring down the tone a bit!