A Roman Catholic will never receive communion in other churches.
No, a Catholic should not receive communion in anything but a Catholic Church.
Ordinarily, a Catholic should only receive Holy Communion in a Roman Catholic Mass. Most other churches are not in communion with the Pope and disagree on certain doctrines, and so have removed themselves and established themselves as a separate church. Catholics believe that because of this, their communion is not the Body, Blood, Soul, and Divinity of Jesus Christ. To participate in their communion would mean that one would be participating in their service, which would be to deny the Catholic Faith's teachings on the Eucharist, etc. Therefore, a Catholic usually cannot receive communion in these churches. There are possibly some exceptions - see your local Catholic priest to learn about it.
No, the person would have to undergo instructions and receive their First Communion in the Catholic Church. The theologies concerning the Eucharist of the two Churches diverges considerably.
Catholics do not 'take' communion, they 'receive' communion. Yes, you must be a baptized Catholic to receive communion in a Catholic Church. Also, you must have undergone instruction and received your First Holy Communion.
.Catholic AnswerCertainly not, first of all, one may never TAKE Holy Communion. One may only RECEIVE Holy Communion, and that only in a Catholic Church and IF one has been to Confession recently. Given those conditions, yes, one may receive Holy Communion at another Catholic Church; certainly not at any heretical sect nor at one of our separated brethren. The former, the various protestant denominations are not actually "Churches" having no valid priesthood, no valid sacraments, etc. To participate in one of their services is to apostatize and to declare that you are no longer a Catholic. The later, the Orthodox Churches, the old Catholic Churches, Polish National Churches, and chapels run by St. Pius X priests are all in schism and are not in inter-communion with the Catholic Church.
From Catholic.com:A non-Catholic may not receive Communion. Actually, not all Catholics may receive Communion. Only those who are in a state of grace can receive the Eucharist. To receive Communion in the Catholic Church is a sign of complete acceptance of Catholic teaching. It is also a sign of complete unity among believers. Unfortunately, Catholic and non-Catholic Christians still do not share such unity. At present, the mutual reception of Communion by Catholics and non-Catholics would not be an honest sign.
No, civilly married couples who are not married in the Catholic Church are generally not allowed to receive communion in the Catholic Church.
In the few Anglican churches that continue to maintain the Catholic tradition (known as 'Anglo Catholic' Churches) then they may well say 'no' just as the Roman Catholics would. However, this is against the normal practice of the church, and in the vast majority of Anglican churches anyone who normally receives communion in their own denomination are welcome to receive communion in an Anglican church. In my own Anglican church we have gone a stage further - inviting anyone who 'loves the Lord' to his table to receive communion whether or not they are a communicant member of another Anglican church or a church of any other denomination.
No, according to Catholic Church teachings, a Catholic who marries outside the church without proper permission is not allowed to receive communion.
.Catholic AnswerOf course not, an Anglican is a protestant, a Catholic Church is Catholic. An Anglican may receive Holy Communion in a Catholic Church after completing RCIA classes and being brought into the Church at the Easter Vigil, but if they wish to remain an Anglican, they are, by that very fact, proclaiming that they are not in communion with the Catholic Church, so to receive Holy Communion in a Catholic Church would be a lie and dangerous to their spiritual well-being. Aside from all that, Catholics to not "take" Holy Communion, they "receive" Holy Communion.
Most Catholic children receive their First Holy Communion when they reach the age of reason, about seven years of age. Communion is the receiving of the body and blood of Christ that have been transformed from simple bread and wine at the consecration of the Mass. Children usually require one or two years of education about the sacrament before they receive communion for the first time.