Hello! Finally got the laptop fired up!! Sorry for keeping you all hanging on
Well after all the its this, its that, try this, try that it turned out to be......
A STONE!!!! About 3-5mm in size!!
:-(
Basically said stone had found its way into the fuel tank, sat in the swirl pot in the tank directly under the pump. When the car was idling or pootling around it was fine as the pump was drawing enough fuel to pick the stone up and cause any issues BUT when i drove at my normal 'Ar$e is on fire' manner the fuel pump was under more load creating more suction and drawing the stone up into the pump and blocking the impeller?
When the garage found the problem there was a massive amount of swarf sitting directly below the pump and the pump itself was buggered! The stone had chewed up the insides of the pump and really was having serious issues trying to draw fuel up, so a new pump, filter and the tank removed, drained and cleaned out and now all is good!! Well chuffed!! But the downside was the agro with 3 different garages in the first place, various costs with the intial 2 garages, being fobbed off by the Main Stealer (And them busting my BNIB manual gearstick I'd recently just fitted) and then the final bill!! Inc the culprit of Mr Stone....
So, Omegatron is BACK to her happy old self!