Missing at idle

[Dannyfrs]

When the car is at idle or low revs it misses. It has got worse over the past two days. I have bought a new set of NGK Platinums today do we think that will resolve the issue as it clears further up the rev range.

 

[Dannyfrs]

I changed the plugs today and was better but still not 100%.

I didn't re-gap the plugs just used them straight from the box they are the correct NGK's.

Would the next port of call be the coil pack?