Mitchell’s car. It’s a 1964 Volvo 121, registration 881 HWN. This is one model from Volvo’s P120 range, all informally but usually known as the Amazon. Models included the 120, 121, 122S and others, all virtually identical externally.
Hal’s car. An immaculate 1968 Mercedes 280S saloon, registration NMS 475F, one of numerous models based around Mercedes’ W108 body style.