Merger of Unite and PCS unions could threaten impartiality of Whitehall . MPs warn it would make two of all civil servants members of 'super-union ' Unite has donated £14.3million to Labour since Ed Miliband became leader .
Merger of Unite and PCS unions could threaten impartiality of Whitehall . MPs warn it would make half of all civil servants members of 'super-union ' Unite has donated £14.3million to Labour since Ed Miliband became leader .