Cast members Saskia Reeves and Alice Krige each played the same character, Lady Jessica Atreides for television. Reeves portrayed her in the mini-series Dune (2000), though Krige had been the first choice. Krige played Lady Jessica in the mini-series Children of Dune (2003) when pregnancy prevented Reeves from reprising the role.
As Johnny Worricker is driving through Westminster at night he is listening to the Shipping Forecast which is broadcast at 00:48 and 05:20. The time on the Clock Tower (Big Ben) shows 01:53.
The airport departure board shows long-haul destinations with flight numbers for EasyJet and Ryanair. For instance, EZY215 is shown as a flight to Santiago, while in reality, it is a Stansted to Glasgow flight.