What types of religious foods do the people of England eat?

At Easter it's hot cross buns and simmenel cake - a fruitcake with marzipan inside, with either 11 or 12 marzipan balls on the top, to symbolise the apostles (number depending on whether Judas is included). Easter eggs symbolise the rebirth of Christ.

Pancakes on pancake day - a tradition of using up all the remains in the cupboard before the start of Lent.

The Christmas period does not seem to involve "religious foods" in the UK.

As for other times of year, hot cross buns are usually available from supermarkets all year around (however some choose to remove the cross for religious reasons.) I don't think there are any other religious foods that are eaten all year round.