I think that is pushing it a bit
Not really, off the top of my head pre-Thatcher Tory governments supported nationalisation of gas, electricity, water, telecommunications, transport, governments bailouts of the car industry, steel, and various others. Very low VAT and basic tax rate. Very high income tax on high earners, luxury tax on some nonessentials.
Corbyn fell well short of promising all those things in his election manifestos so imo that put him to the right of pre-Thatcher Tory governments.