recycling boxes, the type you put glass in are perfect size for records (our local ones are at least). I know someone who has thousands of records and had to move house, he just bundled them in to a pile of about 100 or so, wrapped them in a bin liner and parcel tape.
Any recommended boxes for records when moving house? These look pretty ok:
https://www.viking-direct.co.uk/en/niceday-economy-archive-box-brown-28.8-w-x-39.4-d-x-30.1-h-cm-pack-of-10-p-4875732?customerType=consumer&?utm_source=google&utm_medium=organic&utm_campaign=surface_google&cm_mmc=Google-_-pla_gen_google-shopping_desktop-essentials_gosc-_-desktop-essentials-gosc-_-4875732&gclid=CjwKCAiA6seQBhAfEiwAvPqu1xW568bRM7GLaExwqQOMCoApLCzvRrM22OSWPdqXMYmiGbiXSKPkjhoCFlQQAvD_BwE&gclsrc=aw.ds