I lived in Eritrea for two years and I've worked in Ethiopia, too, so I couldn't have missed the local bread, injera, if I'd tried. You'll also see quite a bit of Italian food in that part of the world, a colonial legacy.
As a veggie, I enjoyed Sri Lankan food a great deal. The curries were wonderful and the fruit there is also glorious. The best fruit I have ever tasted, though, was when I visited a pineapple plantation in Ghana - pineapple cut fresh from the plant is unforgettable.
In spite of having an Arab/Ethiopian contingency in the family, I have never ever eaten Ethiopian food. I have only ever met Genet while she was on holiday here, and the last thing she wanted to do was cook! And my cousin, although he lived in Saudi for most of his 70+ years, would eat anything. Unfortunately there are no Ethiopian or Saudi restaurants in the part of London where I live either.
I was friends with an Italian family in the 1960s (they lived down the road from my Mum and Dad), so I did get a chance to eat Italian family fare. Otherwise, my only experience of eating Italian food was when on holiday in the mid-1960s. The food in the hotel was, I think, more tourist-y, but we used to get some lovely food on our travels.
I ran a business in east London (Newham) where there is a large Indian/Pakistani/Bengali/Bangladeshi population, so curries were commonplace. A lot of my friends there also used to eat in a particularly popular Cantonese restaurant and the food was pretty authentic, unlike in a lot of Chinese restaurants there or elsewhere.
Over the years, I have worked for several Sri Lankans and have eaten lots of home-cooked Sri Lankan food. There used to be a decent caterer/supplier not too far from me too, and one Sri Lankan couple I knew used to use their services for the huge parties the couple used to throw. Unfortunately our nearest Sri Lankan restaurant did not prove too popular (wrong area, not wrong food!) and it closed down a while back - the closure of the local hospital wouldn't have helped as a lot of the staff there were Sri Lankan.
There are a few Thai restaurants round about but I've only ever actually been in one of them. Most of the main dishes on their menus seem to contain fish sauce and, because of my allergies, I cannot eat them. It was a challenge in the restaurant where I went for the waitress to recommend anything (she could barely speak English, which didn't help). The owner did sort a meal out for me, and it was delicious, but I haven't been back - mainly because of the location, not because of the food.