Looks like the 3 pack of Tado TRVs was £120 last Black Friday, but that was far from the only time that price applied. So... inconclusive, but you're unlikely to get a better price on another day.
Thanks, will see what turns up, A 4 pack of the standard (not cheaper eco model) can be had for £249 so hopefully a slightly better deal will be offered.
https://uk.camelcamelcamel.com/product/B098B2XP8C
Looks like the 3 pack of Tado TRVs was £120 last Black Friday, but that was far from the only time that price applied. So... inconclusive, but you're unlikely to get a better price on another day.