The team, competing for the Channel Islands, previously beat Ireland 22-14 in the semi-final.
Guernsey’s Alison Merrien came back from being 20-14 down to beat Wales’ Becky Shaw 21-20 to collect her third British Isles indoor singles title. Fellow Sarnian, Lianna Bichard, won the junior under-25 singles.
Last week the Channel Islands were competing at the Men’s Championships in Perth, Scotland, and Jersey’s Malcolm de Sousa went out to England’s Danny May 21-13 in the preliminary round of the junior singles.
The fours team of Scott Ruderham, Alan Shaw, Lee Nixon and Thomas Greechan lost to Ireland 21-7 in their semi-final.