hˈɛndɚsən stˈɑːɹɾᵻd hɪz kɚɹˈɪɹ wɪð nˈɔːɹɪtʃ sˈɪɾi ænd mˌeɪd ˈɔːlmoʊst sˈɛvənti fˈɜːst tˈiːm ɐpˈɪɹənsᵻz wɪð ðˌɛm bᵻfˌoːɹ dʒˈɔɪnɪŋ nɔːɹθˈæmptən tˈaʊn ɪn dʒuːlˈaɪ tˈuː θˈaʊzənd sˈɛvən fˈɑːloʊɪŋ ɐ sˈɪksmˈʌnθ lˈoʊn spˈɛl æt ɹˈɑːðɚɹˌæm juːnˈaɪɾᵻd.
Henderson started his career with Norwich City and made almost 70 first team appearances with them before joining Northampton Town in July 2007 following a six-month loan spell at Rotherham United.