I have just been looking back at the river Mersey fishing / and I have only fished vale Park over the last 5 years at least so might start having a go at other spots like town hall steps / new Brighton again both are areas that I have had Cod from quite regular in the past.
I have had cod while fishing for Small eyed ray in Anglesey and when fishing for Bull huss in the menai straits and Bass fishing at Dinas Dinlle
Good size Whiting have become very rear now as well / I can remember plenty of good fishing session for whiting both local and north wales.
BIT OF help if you fish the Menai for cod ? DON'T get carried away with your casting they feed along the rocky shore line looking for small crab and shrimp / Especially during high water a cast of 30 to 50 yards is all that's needed / this also applies with Coalfish .
And like I keep saying try moving around when fishing fish different spots of a venue as the tide floods or ebbs.
Cheers Brian
Do you target Cod and where and how ???