@El Loro posted 11/2/20GB drawn away to Mexico (GB has generally been drawn away over the years rather then at home so as usual it's another away visit). Means that Mexico have the advantage of choice of venue and surfacs and a home crowd.
At present GB have a world ranking of 14 and Mexico 26. Tie is played 17 and 18 April. Winner goes through to the qualifiers round in 2021, loser drops back down to the respective Group 1 groups (those are the Americas, Asia/Oceania and Europe/Africa - as more countries play in the Europe/Africa group that group is split in two sub-groups).
Obviously that tie never took place. Announced today that the tie has been posponed until next February.