I did not know that Indian junk is sold in England. Here in Canada there is an Indian surplus electronic parts store Sayal that sells some good stuff and some garbage. I think ebay, Amazon and Ali sell lots of garbage.
Here are many good LED strips: https://www.superbrightleds.com/cat/flexible-strips-and-bars/
Here are many good LED strips: https://www.superbrightleds.com/cat/flexible-strips-and-bars/