A knife comprising: a handle having a mount supporting a removable blade, said mount supporting an elongate protrusion for engaging a complementary slot in the blade, a channel dimensioned such that a rearmost part thereof remains exposed when the blade is mounted on the handle; wherein: an upper surface of the protrusion overhangs a recess formed in a front end of the mount forming a shoulder, and the blade is mounted on the handle with the slot of the blade aligned with the protrusion and the blade pushed backward until a front edge of the slot is engaged within the recess; characterized in that: the mount has a width that is dimensioned for supporting a width of the blade with no overhang, the mount has a concave surface that fully supports the blade and induces slight flexing of the blade, which urges the front of the blade upward against the shoulder and secures the blade on the handle, the concave surface reaches an elevated landing that is located sufficiently rearward of a tip of the handle so as to remain exposed when the blade is mounted on the handle, the channel is formed in the landing and is dimensioned such that when the blade is mounted on the handle a rearmost part of the channel remains exposed and a remaining part thereof lies under a rear part of the blade, and the elevated landing is provided with a ridge that abuts a rear edge of the blade and intersects the channel so that the rearmost part of the channel remains accessible from the ridge and allows a tool to be inserted into the channel for removing the blade. a handle having a mount supporting a removable blade, said mount supporting an elongate protrusion for engaging a complementary slot in the blade, a channel dimensioned such that a rearmost part thereof remains exposed when the blade is mounted on the handle; wherein: an upper surface of the protrusion overhangs a recess formed in a front end of the mount forming a shoulder, and the blade is mounted on the handle with the slot of the blade aligned with the protrusion and the blade pushed backward until a front edge of the slot is engaged within the recess; an upper surface of the protrusion overhangs a recess formed in a front end of the mount forming a shoulder, and the blade is mounted on the handle with the slot of the blade aligned with the protrusion and the blade pushed backward until a front edge of the slot is engaged within the recess; the mount has a width that is dimensioned for supporting a width of the blade with no overhang, the mount has a concave surface that fully supports the blade and induces slight flexing of the blade, which urges the front of the blade upward against the shoulder and secures the blade on the handle, the concave surface reaches an elevated landing that is located sufficiently rearward of a tip of the handle so as to remain exposed when the blade is mounted on the handle, the channel is formed in the landing and is dimensioned such that when the blade is mounted on the handle a rearmost part of the channel remains exposed and a remaining part thereof lies under a rear part of the blade, and the elevated landing is provided with a ridge that abuts a rear edge of the blade and intersects the channel so that the rearmost part of the channel remains accessible from the ridge and allows a tool to be inserted into the channel for removing the blade.