You can have a Anglican wedding in Portugal in one of the Anglican churches in Lisbon, Estoril, Porto and the Algarve (www.lisbonanglicans.org/weddings.htm)
Since Portugal is a Roman Catholic country, Anglican Church is not licensed to perform the legal / civil wedding. This means that you will need to sign the civil marriage before the Religious, (it can be on the day before for example).
Every year there are many Anglican Weddings in Portugal, special from UK couples, and everything is ready for yours to be next!
Dream Day Wedding Planners - Experts in Destination Weddings in Portugal