On his visit to Rothamsted Research in Hertfordshire Mr Paterson visited the field where the active GM crop trial is taking place.
The field, which is surrounded by a high fence, has security guarding it 24 hours a day and signs warn of guard dogs.
Everyone going through the gate next to the field had to sign a book as part of the tight security process - even Mr Paterson.
Before taking the trip out to see the crop trial, Mr Paterson toured the laboratories and had a go at using a particle gun, which is used in the GM process
More top news
A seventh person has been arrested after the murder of a17-year-old in Northampton.
It will be damp and breezy with rain on and off through the day.
Mainly light rain arriving later in the night. On Saturday, mainly cloudy with periods of rain and some bright intervals.