Boys running with a model plane – Quinton House School, Upton Hall, Northampton, Northamptonshire, United Kingdom.
The hangar where the boys are kidnapped – Still searching for this location
McKee (John Vernon) gets rid of his two associates in the kidnapping – M3 junction near Bagshot and Lightwater, Surrey, United Kingdom
Major Tarrant (Michael Caine) comes to investigate Celia Burrows (Delphine Seyrig) – 1 Cleve Road, London NW6. There was a studio located in the back of the house but it’s now gone.
Tarrant driving away – Cleve Road at West End Lane, London NW6
Sir Edward Julyan’s (Joseph O'Conor) estate – Wykehurst Place, Bolney, West Sussex, United Kingdom
Alex Tarrant’s (Janet Suzman) house – 80 South Hill Park Gardens, London NW3
Major Tarrant’s office – 35 Rose Street, London WC2
Tarrant’s basement apartment – 227 Elgin Avenue, London W9
Tarrant’s office back entrance – King Street at Garrick, London WC2
Tarrant entering the Tube – Aldwych station, Surrey Street at Strand, London WC2. The station was only partially in operation since 1958 and completely closed in 1993. It was a popular filming location even before its closure.
Tarrant exiting the Tube – Shepherd’s Bush station, London W12
Tarrant running from his pursuer – the footbridge connecting the station to the West 12 Shepherds Bush shopping centre has since been removed.
Tarrant meeting with Celia – Vagenende, 142 Boulevard Saint-Germain, Paris, France
Tarrant accompanies Celia to McKee’s hideout – the entire Bercy district has since been redeveloped and only the Pavillions de Bercy (seen in the background) remain standing. They now host the Musée des Arts Forains.
McKee’s hideout – the street and buildings have been lost to the Bercy district redevelopment.
The prison hospital – Still searching for this location
Tarrant escapes from the prison van – Still searching for this location
The police chasing Tarrant on the bridge – Pont de Bercy, Paris, France
Tarrant arriving back in England – Ramsgate Hoverport, Pegwell Bay, Kent, United Kingdom. The hoverport ceased its operations in 1982, the site was eventually closed and all buildings completely demolished.
Tarrant’s wife Alex goes to her friend’s house and fools her police escort by escaping through the back entrance – 29 Eldon Road, London W8
Tarrant meeting with his wife – Dominion Theatre, 268-269 Tottenham Court Road, London W1
Tarrant’s wife researching the windmills – 55 Great Ormond Street, London WC1
The black windmill – "Jack" windmill, Hassocks, West Sussex, United Kingdom. It's privately owned and is not open to the public.
The other windmill – "Jill" windmill, Hassocks, West Sussex, United Kingdom. The mill has been restored by volunteers and is open on most Sundays from May to September.
"Jill" and "Jack" windmills, Hassocks, West Sussex, United Kingdom
The Ipcress File