As mentioned earlier, Alex Kingston isn’t the only former Doctor Who actor interested in getting an episode with Jodie Whittaker’s Doctor.
Matt Smith has hinted he’d be up to return as his Doctor, and Karen Gillan wouldn’t mind seeing her Amy Pond have an adventure.
Kingston would seemingly have a better shot at appearing in an episode than those two considering their busy schedules, mostly because she’s appeared in far more episodes in recent years than either of them.