Question on 303 rounds RD

Good afternoon all, having found some bullets in my grandmothers house and having done a little research I wondered if you could help me see if the info I have gathered is correct before I hand them to the police for destroying.
There are 5 rounds the first I believe to be a practice round. 2nd I think is a standard 303 round made by Royal Labratories Woolwich 1926, 2 linked rounds with tops appear to have melted? Again Royal Laboratories 1937, last one is a V1 round nosed 303 made by Kyle 1911?
I will add each as a pic as I can only attach one to this post will mark them all as Question on 303 rounds RD

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