Hey, welcome to the forum. The best place to find robot wars videos is on youtube. Just do a search for robot wars and then follow it with either series number or specific robots eg robot wars typhoon 2 and you will find all the videos you need.

I do have all of series 7 on video tape but I've never had the time to convert it to DVD format (I will get around to it one day!)

This thread should probably be moved to the general section.