Another response has come in regarding this query. Vince Brearey, operations director at Offset Productions in Kent, says: "Although we are not based in London
(only 35 miles away in Maidstone Kent), we can and have been
producing greetings cards and posters in excess of 30 years."
Details: www.offsetproductions.co.uk Tel: 01622 795009.
Many thanks for the getting in touch, will pass this on.