This series has been something of a surprise hit with me. I gave a miss initially, but then watched episode 1 on the BBC Player and was hooked. It moves at a good pace, interweaving the various threads throughout the episodes and across several episodes. The casting and acting is top notch all around. They've recreated the 70s superbly, too, and it really rolls back the years for those of us who are almost the same age as Danny Baker (I'm a couple of years younger). In addition, the music from Squeeze really fits the bill, along with a superb 70s soundtrack.
And ignore all that nonsense about Peter Kay's cockney accent. It doesn't matter. He does a great job with the role of Danny's father.
All in all, a great watch. I hope they push ahead with series 2. I read that Baker and Pope are already working on the second series.