The British Rail Class 414 (or 2 HAP) were two-car electric multiple units that were built between 1956 and 1963. They were withdrawn in 1995.

The class formed part of the Southern Region's express fleet and were fitted with the standard 90 mph (140 km/h) express gear ratio, for such units. This was primarily because a number of their duties involved working in multiple with the 4 CEP Express fleet, also of 90 mph maximum speed. Three batches (209 units) were built.

Modernisation of the units began in 1983, when 10 DMBSO from withdrawn units were converted for use on the Gatwick Express service in conjunction with converted loco-hauled Open First (FO) and Open Second (SO) vehicles and class 73 locomotives. These vehicles were classified as Class 489 with "units" numbered 9101–9110 and individual carriage numbers 68500–68509.

Two complete units have been preserved; (with a further four driving motor coaches, see Class 489)