There is no longer any flying activity in Cottestmore zone and Deenethorpe is not in the MATZ. They will give you a service if you need one. The useable runway is about 700m marked by displaced thresholds.
There are no facilities at Deenethorpe and you will find the Microlight boys are very hostile to visitors as the airfield has a movement limited placed on it by the council. There is no security and no proper parking, you just park up on the starters of either runway with the preferance being the 04 threshold. There is no fuel either.
You also may struggle to get a taxi to come out and pick you up.
Spanhoe is 4 miles away from Deenethorpe and the same distance to Corby as Deenethorpe and has 650m and rudimentary facilities. It has secure barriers and with 30 odd aircraft there there are no issues with security. AVGAS is also available. You will probably be able to get a lift into Corby and no problem with a taxi as a rule.
Dave Bakers place, Bakersfield is at the end of the Deenethorpe runway. Grass and about 500+m. No facilities.