Is this even worth it or should I just focus on regular voluntary stuff? I live in a city in the UK far from London so I don't expect them to have been approached like this.
Also, are you allowed to do the work at home or are there legal issues? Having extra work in addition to uni is no problem. The real pain in the ass would be the travelling to and from work and being required to wear a shirt and tie to uni because there's no time to get changed at home.