I could see a gap in the political market for a left wing economically, but right wing socially party. A lot of the old hard left wing were quite conservative socially, and nothing has really replaced them. It would present a credible challenge to Farage on the right, and would offer an alternative political model to the alienated who seek the old "local jobs, local people and local traditions" philosophy that only Farage and co currently offer.
To be honest that wasn't what I was really suggesting; I was thinking of something which is left-wing on both counts. So more pro-workers-rights than Labour for example. I was thinking of, perhaps, a form of Corbynism but with a leader who appeals to more people than Corbyn did. While Corbyn was a little Brexity I think most would consider him socially liberal.
There is a good percentage of the population, I suspect, who consider that Labour needs to be a bit more left wing economically (e.g. keep winter fuel payments, do not raise student tuition fees, keep the bus cap at £2), but absolutely not more right-wing socially. I know I am one, for example, and I don't think I'm alone.
I certainly wouldn't want Galloway, or a UK answer to Robert Fico, anywhere near power, for example.
There is an argument in some left wing circles that social liberalism doesn't actually suit the left wing at all, because it leads to worse conditions for workers and people in general
It's a bit of a daft argument though. Being pro-LGBTQ+ rights for example, or pro ethnic-minority rights, doesn't lead to worse conditions for workers or people in general.