I'm not sure I would, how deep is it though?
If it doesn't meet MOT inspection criteria, then you'll have to scrap it to stay legal.
Reason for Rejection
1.
a. A tyre has a cut the length of which is in excess of 25 mm or 10% of section width, whichever is greater, deep enough to reach the ply or cords
b. a tyre has:
a lump, bulge or tear caused by separation or partial failure of its structure. This includes any lifting of the tread rubber
any of its ply or cord exposed