Hi, might be a late question since your problem happened a few years go.
Did you plug your new washing machine to the same plug?
Hi...are you in Cornwall,by any chance?
My late mother-in-law,asked a Cornish roofer,for a quote on her porch.....he come round 2 years later...i kid you not...to ask if it still needed doing
"....tomorrahs nort touched,my larver..."