Insulation advice for retaining floorboards?

[parakeet]

We live in a Victorian terraced house.
In parts (esp. the lounge, it's cold).
My family keep saying, "Get carpet, it will be warmer."
I agree, but I'd hate to lose the floorboards look.

What alternative insulation methods are there that would allow us to be warmer and to retain the Victorian aesthetic?

Thanks.

 

[freddiemercurystwin]

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