Just now (12:20 pm), from my office window, I've seen two swift spp. heading south slowly over Benson Lane, in Crowmarsh. I had no binoculars, and by the time I got some they had gone, but I had fairly good views at moderate range for about a minute. All I can say is that they looked big, and I don't think they were Common Swifts due to the size and different flight action (but they were going into a strong headwind). If I had to put a name to them I'd say Alpine Swifts, but without a better views I can only say for sure that they were 'swifts', and 'they didn't look like Common'. (per RB).