Increases in alpha particle loss due to MHD activity in TFTR were observedfor both coherent modes and transient reconnection events using an array ofscintillator detectors near the wall. The magnitude of the coherentMHD induced alpha loss was normally comparable to the MHD quiescentfirst orbit or TF ripple loss, but the magnitude of the alpha loss duringreconnection events was up to 1000 times higher than this for a short time.Modelling suggests that the coherent MHD loss mechanism will be lesssignificant for future reactor scale DT tokamaks due to the smaller ratioof the alpha gyroradius to the minor radius.