Possible Clues:

• House supports industrial action to be effective
• Deal an effective blow, refuse to work in the house
• To deal an effective blow, refuse to work in the house
• Have desired result poor mothers like for pound less
• Hit the intended target
• Deal an effective blow and refuse to work in the house
• Irksome, the bending to achieve the desired effect
• Three-wheeler on double bend in impact
• Have an effect in following industrial action