Research Machines may not be floating on the Stock Exchange after all: the Oxford educational computer company, which now calls itself RM Plc, said last night that its flotation might be forestalled by an approach from Misys Plc which might lead to an offer for the company – Misys has clearly looked at the flotation price, found it reasonable and decided the company would be much cheaper to buy from its handful of existing owners than from a whole string of public shareholders; RM, meanwhile will be feeling nervous about the prospects for its flotation in the wake of the defeat of the UK government on its revenue-raising proposals and yesterday’s rise in interest rates.