Agreed, won't take much for this to explode, looking at 2p+ in the coming weeks/end of June. Tap Earn has already proven what it can achieve within early weeks of launch
From previous stocks I've invested in that are going ex-dividend, you need to be a shareholder a day before it goes ex-dividend (I.e 25th June in this case) in order to receive the dividend. Not sure if B&M have got a different set up...
Lovely to see large investors such as Barclays building their stake, really confident about this and the future! Went into store yesterday and it was really busy with great product range.