^^^^^^ Hope her recovery continues well Mick.
The Pickled Egg hasn't got a great track history as a pub name, the only surviving one on the entire planet, ( and the class of 21 TIT, hasn't come up with any evidence to the contrary) apart from the FCF's very own virtual pub, is that former run-down, but recently refurbished establishment in St. Helens.
The most ancient of Pickled Egg pubs I have discovered, was one in Clerkenwell London. The current street Crawford Passage, was formerly called Pickled Egg Walk. The Crawford name comes from a former licencee of the Pickled Egg.
Bit collateral info
London’s culinary streets: Pickled Egg Walk to Saffron Hill
...Pickled Egg Walk. This walk which, alas, no longer exists, was once apparently a “place of low amusements” and took its name from the Pickled Egg tavern. The tavern, in its turn, took its name from the fact that the proprietor had a particularly delectable recipe for pickled eggs.
The story goes that Charles II (though some version say it was his father, Charles I) once stopped there, sampled that delicacy for the first time, and enjoyed it. Royal pleasure was something that any canny landlord would capitalize on and this proprietor was no exception, promptly naming the inn for his speciality.
You wouldn't expect the old boozer still to be surviving.....no this is the streetscape today in Crawford passage