Our wedding is very much DIY! We are looking for our caterers now, and have...

Our wedding is very much DIY! We are looking for our caterers now, and have a reception for around 60 between 2 and 7, then an evening for around 100! We want something different for the evening, maybe a pizza oven or other street food to avoid two buffets, as we are probably having a hot buffet during the day! Any ideas, preferably on a fairly low budget? We are based in Newcastle so local ideas would be fab, thanks!