[Roger]

Its on the A429 heading south of Cirencester towards Malmsbury, pass through or past Kemble and the airport is a couple? of miles from there on the A429
GL7 6BQ if your using sat nav
From Google, but don't know where you are in Northamptonshire so this is from Northampton

At the roundabout, take the 1st exit onto A43
Go through 4 roundabouts 12.7 mi
7. Continue straight to stay on A43 161 ft
8. Slight right to stay on A43
Go through 6 roundabouts 11.4 mi
9. At the roundabout, take the 2nd exit onto the M40 ramp to London/Newbury/Oxford 0.3 mi
10. Merge onto M40 5.3 mi
11. At junction 9, take the A41/A34 exit to Bicester/Aylesbury/Oxford/Newbury 0.3 mi
12. At Wendlebury Interchange, take the 3rd exit onto A34 heading to Oxford/Newbury 6.3 mi
13. Take the exit toward Headington/Woodstock/Witney 0.2 mi
14. At Peartree Interchange, take the 2nd exit onto Woodstock Rd/A44 heading to Ring Rd/London/Cheltenham/A40/Oxford/Witney/Headington 0.5 mi
15. At Wolvercote Roundabout, take the 5th exit onto Northern Bypass Rd/A40 heading to Cheltenham/Witney
Continue to follow A40
Go through 3 roundabouts 17.3 mi
16. Turn left at B4425 8.7 mi
17. Turn left to stay on B4425 5.6 mi
18. Continue onto Burford Rd/A429
Continue to follow A429
Go through 3 roundabouts 1.5 mi
19. At the roundabout, take the 3rd exit onto Bristol Rd/A419
Continue to follow A419
Go through 2 roundabouts 1.5 mi
20. At the roundabout, take the 2nd exit onto Tetbury Rd/A429 1.0 mi
21. Turn left at A429 3.5 mi
22. Turn right 144 ft
23. Turn left 0.3 mi
24. Turn right
Destination will be on the right 0.2 mi

Cotswold Airport Showground
Cotswold AirportKemble GL7 6