Compact collapsible cycle

A cycle for use by a rider over a terrain surface, said cycle including:

• a frame having front and rear portions;
• a seat attached to the frame;
• a front wheel attached to a steering member, said front wheel rotatable in a first plane about a primary axis, said steering member being pivotally attached to the front frame portion for rotation about a secondary axis orthogonal to said primary axis;
• a user-operable steering mechanism coupled to said steering member;
• a rear wheel rotatably attached to the rear frame portion and rotatable in a third plane about a tertiary axis, the rear wheel having a different diameter to the front wheel, and
• a drive mechanism operatively coupled to at least one said wheel;
• said cycle being collapsible from an erect riding configuration to a collapsed configuration by repositioning said wheels into mutually closer proximity,
• wherein a recess or aperture is provided in one said wheel and configured such that in the collapsed configuration said recess or aperture at least partially accepts the insertion of the other wheel.