Thanks Kieron,
I was a bit sceptical myself, but with three independant reports, it sounds as though it was a real daylight fireball. The following are taken from Dirk's Lunar meteorite hunters site:
15MAR2012
lisa williams
cavendish,suffolk, england
13.03 gmt 1-2 sec
fell downwards, was facing north
no sound, bright silvery, blue (reminded me of welding sparkes)
very bright just tapered away
completely jaw droppingly amazing, daylight. looked like a firework but x1000 brighter
15MAR2012
Sharon foley
Saffron walden town in essex uk 13.10 gmt 3 seconds approx
facing north was directly in front of me
red / orange like a ball of fire no sound
bright like fire
looked as thought there was
never seen anything like this ever before in sky above homebase
15MAR2012
Anthony D Baxter
Much hadham Hertfordshire UK
13.02
1 -2 seconds
North, slightly to my right beautiful red and blue with a hint of green very bright given its bright daylight here
no
I collect meteorites so i know a bit about them. I have seen a fireball before traversing the sky, but never an actual meteorite travelling almost vertically
With all three reports indicating the direction as north there's not enough information to try and arrive at an accurate location. I didn't find any infrasound detections.