According to Private Eye, there may be another explanation for his move to Wellingborough. In their January edition (issue1305) PE reports as follows under the byline "Broken Herts":
"So farewell then John Campbell, chief exec of North Hertfordshire district council, who is off to run the smaller Wellingborough borough council in Northamptonshire.
Campbell has perhaps wisely decided to leave the sinking ship that is North Herts' £50m redevelopment plan to wreck Hitchin's historic town centre (Eyes assim). Rather than explain the details of the council's much-criticised secret "sweetheart" deal with developers Simons of Lincoln, he is taking a pay cut to move. His deputy Norma Atley has been left to try to explain to the district auditor exactly why the council is giving large chunks of Hitchin away to the developer for free."
Cllr. Bell, the Leader of Wellingborough Council, says in the same edition of the Link "...John is joining a council that must still make significant budget savings over the next few years. It's not going to be easy, but we've every confidence we have the right man for a very demanding task." No comment!