Depends on what you find for the money. I was raised on the principle that if you build an off-roader, you'd better not make it your daily driver. That being said, I've got a lot of trucks that were in fact my daily driver, in fact for many years I did that before I had kids and needed to start looking at SUVs and crossovers.
I'll have to do a quick conversion, and I'm not sure what the used truck market is like where you're at, but as of TODAY, £3500 is worth about $5900 USD.
For $6k, i'm not sure that I would be able to find something that I would be comfortable with being a daily driver to haul kids around, or if I needed to be on-time to a job (like I was opening) and if not then there would be heck to pay. Around me, for $6k USD you're going to be looking for a truck that's got over 100k at the minimum and for a Toyota you're going to be lucky to find one with that few miles for a lot more than $6k.
Now, if you're not having to carry kids, you can risk maybe being stuck/stranded every once in a while, then I think that you could find a good basic Hilux to get you started on your way.
Anyone agree/disagree with me on this?