Dangerous works by National Grid - causing injurie and stress to passing pedestrian's

My wife and myself are just about to step into Rainbows charity shop adjacent to works ‘ 2:30 pm approx - Friday 5th Jan , Exposed LV large cable with known fault is being excavated site by operative ‘ dangerous works carried out against HSG47 , Cable explosion causing large ploom of smoke heat and sparks which engulfs my wife and myself as stepping into Rainbows doorway - approx 2-3ft away from blown cable, Wife has singed hair ( left side )and shock - I had to seek medical attention for possible perforated ear drum in left ear.

Negligent works carried out by National Grid which had an impact by pedestrians my wife and myself.