Updated 4.23pm: Accident now cleared.
There is currently one lane closed on the M5 northbound after an accident between Junction 27 for Tiverton and Junction 26 for Wellington.
It is thought the accident happened at about 2.45pm.
Currently there are delays of 10 minutes and the Highways Agency expect normal traffic conditions by 3.45pm.
Highways Agency say delays are now up to 15 minutes and normal traffic conditions are expected by 4.45pm.