Can answer some of these for you ....
Was the training difficult? As in did people fail or loose their jobs over it? I'm slightly worried and don't want to loose my current and bt job?
I have always found the training to be good, but then only get as much out as you put in ... It's all common sense, if you've none of that you will struggle.
What is working hours/days like?
The more skills you acquire, the more varied your days are going to be in the long run.
There is much to like about the role, you'll meet all sorts (something I find fascinating) I have visited some weird and wonderful places .... the boys are are a good bunch to work with (though you can days without meeting one) everything you wear, the van, yer tools, etc, etc all provided. Plenty of advice and support to be had.
Down sides .... the weather, man it's a bum job in the rain, or the cold. The stats, learn to ignore them. The chasms that sometimes exist between what you can actually do and what is actually required. The erosion of quality is king work ethic.
What is pay like/overtime?
The pay is OK .... but if you wish you can cane the O/T (as long as you've the skills to make yourself useful to them)
What does the 60 min travel actually mean as In will you ever travel more than 60 mins to and from first and last job?
Nope usually much shorter commutes than that, they are just trying to keep you flexible. Of course you'll end up travelling over that, no one can account for traffic. Tuesday 1st job was a 50 minute drive away, but from where I finished to home was exactly 3 minutes .... swings and roundabouts innit.
What happens if you crash van
Depends under what circumstances ..... Some of the lads seem not to give a hoot ... a concept I don't understand, it is your best bud at work, keep it clean, drive it well, try not to ding it up. It is often the first site the customer has of you, people judge by appearances. That said I have been driving and had a van written off. The crash was deemed 50/50 by the police The company were supportive, but arranged driving courses for me.
Good luck, and who knows, if you are working in or around Farnborough, I might bump into you.