Has anyone seen or know about any weather data from Kew observatory that closed in 1980?

The temperature series dates back as far as I know to 1797 and the rainfall series even earlier than that. I would ask the UKMO to see if they could provide it but I know from experience that would be very costly. I know there was a book on the subject in the various Met Office libraries I worked at but surely this data should be available in electronic format nowadays?