Stock doves are fairly common birds but probably often overlooked because of their superficial similarity to feral pigeons (which are descended from rock doves). They are fixtures in my garden and in recent weeks have been here half dozen at a time. They are very fond of nyger seed and are usually found under the nyger seed feeder. Males and females are similar in appearance (see here for a comparison) but easy to tell apart at present as the males are chasing the females.
The overall English population has been fairly stable in recent years after recovering from poisoning by insecticides used in the 50s and 60s.
The Bird Atlas shows that the North East of England is one of the regions showing a strong recent increase in the population (blue dots on this map).