The Power of Parker isn't going to win any awards for services to television. Having said that, it provides plenty of lighthearted and nostalgic humour (I say that despite not having been born when this was set). If you're a fan of the cast members, you'll be a fan of this.
I watched the series in two sittings, it made me chuckle throughout and I had a smile on my face for most of the episodes. No, it's not a groundbreaking comedy. No, it hasn't got laugh out loud and roll around on the floor in fits of giggles moments. But it IS funny, despite what other reviews may say. The storyline isn't actually that far fetched and there are loveable characters, as you can expect from the names in the cast list.
This is a how for those who are fans of (northern) British humour and TV. The show felt like a warm hug and a good cup of tea on a rainy afternoon. If recommend it and watch it again. Give it a go before you write it off.