There were 2 USAF C130 flights several minutes apart midmorning overhead us here in Kent flying northeast. Did not show on Flightradar24, but did on ADSBexchange. My guess you saw these.
Yes, there were actually three.I couldn't see them, but I followed them on ADSB. They seemed noisier than usual (maybe because of atmospherics?) and I thought the first one was an Antonov, which was why I checked with ADSB