ɪn mˈeɪ tˈuː θˈaʊzənd twˈɛnti wˈʌn, ɪt wʌz ɐnˈaʊnst ðæt ˈælən wʊd biː ðə nˈɛkst tʃˈɛɹmən ʌvðə bˈælfɚ bˈiːɾi kənstɹˈʌkʃən ɡɹˈuːp, səksˈiːdɪŋ fˈɪlɪp ˈeɪkən fɹʌm twˈɛnti dʒuːlˈaɪ tˈuː θˈaʊzənd twˈɛnti wˈʌn.
In May 2021, it was announced that Allen would be the next chairman of the Balfour Beatty construction group, succeeding Philip Aiken from 20 July 2021.