Complex sentence: After world war one, in a small factory at 17 Stoke Road, Guildford, Surrey he began the manufacture of equipment of this kind together with gliders: in 1930 he improved on the German Zogling primary glider and marketed it under the name of Dagling.
Split into simpler sentences: After World War One, in a small factory at 17 Stoke Road, Guildford, Surrey Dagnall began the manufacture of equipment and gliders. In 1930 he improved on the German Zogling primary glider and marketed it under the name of Dagling.