Nice, are you familiar with grimdigger1's site. I just posted a link for someone else.
https://www.antique-bottles.net/forum/m_52418/mpage_1/key_/anchor/tm.htm#52826
I have a Woolfall bottle I found in Indonesia buried under 6 feet of seabed in Tanjung Priok harbour in Jakarta . I found it when I was working as a commercial diver and was working on a job burying a subsea fiber optic cable. It has Woolfall on the base with Mancr, I guess this stands for Manchester. There's a large letter 'E' in the center of the base (England?). I didn't have a clue what it was for 10 years! It was sent back to Canada and then made a return trip to Singapore. Glad it didn't break.
I recently dug up the bottom of a black glass bottle from an early 1800's foundation that is very similar to the base you show. It has a circle similar to a refired pontil mark and a large E very similar to the letter on yours. Anyone know if this just signified that the bottle was from England or something else?
I would guess the Woolfall marking indicates Woolfall England. The E is sometimes used as a date code on English glass but it doesnt seem to be in this case. I would suspect it is a glassmaker mark. The bottoms could not be refired (fire polished) or the embossing would be removed.
I also have a Woolfall bottle but couldn't see the e-mail from Richard Woolfall? Would you please be able to forward what you have? Kind regards Jon & Oli