I'm just going to tell you now "patriotism" is one of those buzz words that might set some people off here.
It is because the connotation with "patriotism" may include attachment/support for a nation's government or a some people may assume you may have of superiority of that particular nation over other nations.
Just because you said "patriotism"
I understand though, that is not what you meant at all.
Of course it is natural for a person to feel a special affinity or love for their homeland, and for the foods and clothes they grew up with and whatever aspects of their culture do not contradict the rules of Islam.
As long as you don't feel you are superior to any other nation, and as long as you're not expressing a particular attachment to any particular government and their policies, and as long as you care more for your Islamic identity more so than your cultural identity, then it is fine to like a particular food or clothing styles or language or whatever it is from your tribe,
(but at the end of the day the place that we put the limit is at:
we aren't "tribalistic" so we don't make assumptions that any Muslim of one country is better than that of another.)
We have personal tastes and those tastes will naturally coincide with enjoying the halal memories and culture of our homelands.
In that respect there is nothing wrong with you enjoying aspects of your Egyptian/British heritage.