The old saying about the “average British voter” is that they want a “hang the pedos and fund the NHS Party”, to break that down it’s basically: immigration controls, tough sentencing on crime with a well funded police force, tough on anti social behaviour, tough on benefit cheats, and probably these days “less woke bollocks”. Also probably not hammering drivers though I think maybe less so these days as people generally get the need for climate action.
Think Blair’s “tough on crime, tough on the causes of crime”, think ASBOs, Browns “British jobs for British people”, FB memes about homeless veterans and OAPs needing looking after ahead of recent immigrants. Your average Sun campaign “back our boys and crush the criminal scum” type stuff.
Blair was pretty close socially but IMO further right than most want economically. I think he could’ve been a lot more left wing but in hindsight he was it was just he paid for it in a right wing way (PFI) rather than sensible left wing economics.
The left however have put themselves in a corner where anything short of open borders, close the prisons and ACAB makes you right wing filth and that’s a million miles away from your average voter.