BUZZ — UK's Raspberry Pi surges after record first — half profit, revenue
* Shares of single-board computing company Raspberry Pi jump 17.97% at 745p, top gainer across London stocks * H1 pretax profit rises 216% to $19.6 mln from $6.2 mln a year earlier * H1 revenue jumps 90% to $256.9 mln from $135.5 mln last year * Says delivered record first-half performance, driven by strong OEM and res