Potters Bar.
I went to Marks and Spencer in South Mimms this afternoon.
From South Mimms to Big Brother House is less than ten minutes drive.
Once I tried to go to Welwyn garden City using motorway.
I made entry mistake at roundabout and it was too late. I had to drive all the way to the next service station, and had to ask at petrol station where I was. I was in Luton! ha ha.