When over 15% of the stock in issue trades a single afternoon it can't be just a result of a pump; there were a few chunky delayed buys in there as well. Hard to believe anyone would just toss in £20k just on the off-chance of very good news?
Amazing how these good folk arrive urging caution on any decent rise. They always fail to offer any argument or analysis to back up their advice so I always ignore 'em!