This one is a run-by from 'Lawson's Last Stand' and is a country lane with a double chevron sign pointing both ways? Filming was around Batford (Lower Luton Road), Harpenden; North Mymms Park; and Aldenham House School, Butterfly Lane, Elstree for the country locations but I can't find any of the country lanes to match.
From 'The Acorn Syndrome' a car run-by that should be in Elstree/Borehamwood (Barham Road was a main location) areas but once again I can't find this type of house around here:
From 'Dead Reckoning' - this one should be easy as part of it was filmed along Chandos Avenue, Whetstone; but the shots below go past a series of shops past two side roads - one is blocked off and the other has a sharp turn going up hill. Sadly can't read the road sign.
And in 'Slush Fund'; is this Heathrow Airport from 1979?