RE: 120p+ year end close22 Dec 2020 13:39
"it's just what the broker does matches buys to sells"
Where are you getting this from the broker plays no part in a trade other than passing on a MMs offer. MMs are effectively a second hand shop for shares and that is who you trade with. If you have access to DMA and the share is on SETS you can deal direct. But AVCT isn't