It seems that there were several minutes between the calls. As the occupants of CA5 were with Pc West, it's possible that Pc West passed on to them a request to attend WHF. According to Pc Cracknell, this occurred at 03:33, but we don't know how much information Pc Cracknell was given at this time. He arrived at WHF at 04:23, so his journey took 50 minutes, which implies an average speed of about 24mph. In contrast, CA7 was driven at very high speed from Witham to WHF. In considering this, remember that PC West was simply doing a night shift in the control room at Chelmsford police station. In contrast, Bonnett was at the police HQ and routinely dealt with emergency calls. According to Bonnett, all his communications were recorded on audio tape. There is nothing to suggest that Jeremy's call to Pc West was recorded on audio tape.