Support for posthumous conception is strong in the U.K.
Posthumous conception involves using the frozen sperm or egg of a deceased person to conceive a child and as the Wills, Trusts & Estates Prof Blog reports in "How the Brits View Posthumous Conception" the majority of British people approve.
Estate laws generally assume that when a person passes away, all of his or her children have either been born or will be within in nine months, in cases where a widow was pregnant at the time of her husband's passing.
On the other hand, posthumous conception can occur several years after a person passes away. This will present challenges for estates that have been settled and for courts that will have to determine whether the posthumous children should receive a share of an already settled estate.
Reference: Wills, Trusts & Estates Prof Blog (Feb. 7, 2017) "How the Brits View Posthumous Conception".