It is titled 'UK's worst Street Birkenhead, Liverpool CH41'
This was not the worst street in the UK.
It was criminal knocking these houses and the neighbouring streets down.
https://www.youtube.com/watch?v=a6hzUKk3ndc&feature=emb_logo

It was shuttered up ready for demolition, it wasn't that bad around there. One of the few areas where they actually got round to rebuilding after knocking it down. The houses were ok and should have been refurbished instead but it was all part of the gravy-train system.

The cost to modernise the houses was estimated to be £7000 each which would have been trivial compared to the cost of demolition and rebuild plus the quantity of houses would have been substantially more if they didn't rebuild.

Some of the houses had structural problems which would have cost £28,000 to repair, but they were in the minority.

78 houses were occupied, the cost of buying the privately owned houses and demolition was around £8.5M, that is an average of £110,000 per occupied property then there was the cost of building the new houses on top of that plus the loss of housing. The effective total cost per new house was probably a minimum of of £400,000 and could be a lot higher if the number of bedrooms is taken into account.

SOURCE

Out of all the streets from Milner to Plumer, I would say only Milner warrented being knocked down. Having said that, refurbing Milner St would have been more cost effective than rebuiding.
It just winds me up when all the councils are saying 'we need more housing', then knock down perfectly good houses.
To people that don't know the area, that YouTube video makes it look like they deserved to be demolished, when in fact, they were decent houses.