Heat or Dehumidify?

[ChurchlightJane]

Edwardian terraced house north facing bedroom. The back right corner of the room (and also the corner of the house where the two external walls meet) is always damp. It's a very cold room except in high summer.

I've removed the drawers that were there and treated the problem. My dilemma is do I keep the corner warm with a small oil filled radiator running on all but warm days or do I get a dehumidifier? Either is money we can't really waste.

Anyone found the solution please?

I'd use a dehumidifier, as not only will it remove moisture, but in doing so it vents warm air. The temperature in my (very similar!) house went up noticeably when I first bought one.

That's interesting because I didn't realise that a dehumidifier gives off heat too. This room is always freezing so that might work.

Anyone else found a solution?