Anybody who's out in the wilds often enough will have to bail at some point. I have twice and re-pitched at other times. It's just a fact of life. Weather forecasts and bomber equipment might help but will never eliminate that risk. As Martin says a decent torch is worth every gram - and I learn't the hard way ;-)

I have never had to use a bright torch on the Challenge (YET).
But I always carry one.
A Zebralight C30 (200 lumens), 60g with battery and headband elastic, so it can be carried or used as a headtorch and runs off a single CR123 photo battery.
Also useful on a bike (NOT as useful as my 3200 lumens bike light).
Now, that does bring down aircraft.

I have used it outside of the Challenge though, when I am pitching on days it is dark from 16.00 to 06.00.
Useful when you want to see beyond your feet for a pee.

I have been lucky in not needing to bail on any pitches.
Well, apart from a flash flood in Wales in 1976.
But I did have a rear hoop snap on my Warmlite 2R (a bloody strong tent), on Ingleborough a couple of years ago.

Luckily at 5.00am after a very very windy night.
I think there may have been a slight fatigue fault in the pole after much use.
Since then I have customised the tent with a couple of extra guys at the back. (C/O Sean at Oookworks)

The point being, this was good equipment, in an acceptable location, with some extreme sudden gusts, and a pole failure that probably was just metal fatigue. The poles on a Warmlite are aircraft quality aluminium, pre-formed.
It takes some serious ***t to break them.

Had it broken at 2.30am, I would have needed my head torch, I am quite sure.
It was wet and windy and BLOOMIN DARK

So I am with Martin on this.
As unlikely as you are to need a powerful head torch, at a mere 60g, I am going to take it. Just in case ***T happens again.

Well, that's my £10 worth.

I have only once had a tent collapse on me and I felt absolutely no need to bail out at all and I did not need a head torch.

I was halfway up Helvellyn forty years ago in a new-fangled single skin tent (a Blacks of Greenock "Yukon") which was not very storm proof as it happens. Supper had been a chocolate fudge cake, a can of pilchards and half a bottle of whisky. It was as well that it was windy as the environment inside the tent was pretty rank.

When the tent blew down (severalteen times, I seem to recall) it was no great deal. There *was* a lot of flapping, but mostly from Wilky, whose tent it was. I sent him outside into the hurricane in his underpants to re-peg the thing.

I'm not sure if he had a torch or not.

For what would you be needing an extra torch.If you've
bedded down with kit everywhere maybe!.
Tent in trouble ? . Leave your night kit on.Your
day kit "should" be waiting tidy for morning.Put that
complete in the sac.What else is there?.Stove and
pan waiting for breakfast. Put those in the sac complete.
Put your outer gear on and boots, sit and wait for
daylight. Why leave your "shelter"however bad it
is outside, its safer inside.It won't blow away with you in it.
It may if you climb out in the rain/wind/snow.
So the extra"£60"just in case could be put to better
use. What else would you take extra "just in case"?.
Iv'e had a few collapsed tents in the last seventy years
"but never bailed out in the night in a storm. Cheers.

I agree with Humphrey that the LED Lensers are fantastic torches but the L1 is a bit of overkill (unless you want the ability to fry small animals from a distance -could be handy) so why not scale down the cost and weight but still get an epic torch? @m@z0n are currently offering the LED Lenser P3 (runs off a single AAA but is still astonishingly bright and focusable) for £8.39 including free delivery, leaving plenty of spare cash for single malted beverages...

Ah yes, I suspect I may have been Martin's akto worrier. I was camped in a very deep valley between Sanquhar and Wanlockhead - chosen cos the valley was running in the opposite direction to the wind, and, therefore as calm as your Aunty Mary when she got her first librium prescription.
Bloody wind changed dinnit and started hurricaning up the valley/wind tunnel at about two am. Plus pancake-sized snowflakes wot I didn;t want to go out in. The akto flattened a few times but as soon as it came light I was off to Sanquhar station (damply) for the train back to Pieland.
It may have been a poor selection of camping spot. But we all makes mistakes innit? Dim Dwff Torchio!

Yes, the P3 lenser is effective and a lot cheaper than yer man's model. I don't need to see 150 metres when I get up in the middle of the night, I just like to see the environs of my feet.

I really don't want to see my feet AT ALL . . .

And I use a torch often - where I live there are no streetlights, no pavements, and some very large fields, woods, thickets together with the River Tweed. If one of my dogs (usually Gazza) takes a notion to gnash off after an enticing scent I need to be able to see the little butter. In and immediately around the tent I use one of those cute little Petzls.