I have had a reply from the gallery....

Dear Ms Evans,
Thank you for your enquiry on our pair of Victorian Glass Oil Lamps, and for the information provided regarding John Ford Glassworks. I can certainly see the similarity to other etched glass works attributed to them.
Please find enclosed an image of the pair of oil lamps, along with a description and dimensions for your convenience. In our opinion these are how they were originally made.
The price is £6,000 for the pair and they are currently on display in our Kensington Church Street showroom where you would be most welcome to view them in person. We are open from Monday to Friday 9.30 am – 6 pm, Saturday 9.30 am – 4 pm and Sundays by appointment.