diff --git a/export/serializers/people.py b/export/serializers/people.py
index 7be3e85..8791775 100644
--- a/export/serializers/people.py
+++ b/export/serializers/people.py
@@ -30,7 +30,6 @@ class PersonAnswerSetSerializer(base.FlattenedModelSerializer):
             'organisation',
             'organisation_started_date',
             'job_title',
-            'themes',
             'latitude',
             'longitude',
         ]
diff --git a/people/admin.py b/people/admin.py
index b8bda69..de2f2bc 100644
--- a/people/admin.py
+++ b/people/admin.py
@@ -41,11 +41,6 @@ class OrganisationAdmin(admin.ModelAdmin):
     ]
 
 
-@admin.register(models.Theme)
-class ThemeAdmin(admin.ModelAdmin):
-    pass
-
-
 class PersonQuestionChoiceInline(admin.TabularInline):
     model = models.PersonQuestionChoice
 
diff --git a/people/forms.py b/people/forms.py
index 22fe9f5..d0f397b 100644
--- a/people/forms.py
+++ b/people/forms.py
@@ -163,7 +163,6 @@ class PersonAnswerSetForm(forms.ModelForm, DynamicAnswerSetBase):
             'organisation_started_date',
             'project_started_date',
             'job_title',
-            'themes',
             'latitude',
             'longitude',
         ]
@@ -172,7 +171,6 @@ class PersonAnswerSetForm(forms.ModelForm, DynamicAnswerSetBase):
             'country_of_residence': Select2Widget(),
             'organisation_started_date': DatePickerInput(format='%Y-%m-%d'),
             'project_started_date': DatePickerInput(format='%Y-%m-%d'),
-            'themes': Select2MultipleWidget(),
             'latitude': forms.HiddenInput,
             'longitude': forms.HiddenInput,
         }
diff --git a/people/migrations/0044_themes_to_admin_question.py b/people/migrations/0044_themes_to_admin_question.py
new file mode 100644
index 0000000..0f27299
--- /dev/null
+++ b/people/migrations/0044_themes_to_admin_question.py
@@ -0,0 +1,39 @@
+# Generated by Django 2.2.10 on 2021-03-10 09:05
+
+from django.db import migrations
+
+from .utils.question_sets import port_question
+
+
+def migrate_forward(apps, schema_editor):
+    # Make question
+    Theme = apps.get_model('people', 'Theme')
+    theme_question = port_question(
+        apps, 'Research theme affiliation',
+        Theme.objects.all().values_list('name', flat=True),
+        is_multiple_choice=True)
+
+    PersonAnswerSet = apps.get_model('people', 'PersonAnswerSet')
+    for answerset in PersonAnswerSet.objects.all():
+        for theme in answerset.themes.all():
+            answerset.question_answers.add(
+                theme_question.answers.get(text=theme.name)
+            )
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('people', '0043_organisationanswerset_is_partner_organisation'),
+    ]
+
+    operations = [
+        migrations.RunPython(migrate_forward),
+        migrations.RemoveField(
+            model_name='personanswerset',
+            name='themes',
+        ),
+        migrations.DeleteModel(
+            name='Theme',
+        ),
+    ]
diff --git a/people/models/person.py b/people/models/person.py
index 4d1489b..e683127 100644
--- a/people/models/person.py
+++ b/people/models/person.py
@@ -18,7 +18,6 @@ logger = logging.getLogger(__name__)  # pylint: disable=invalid-name
 
 __all__ = [
     'User',
-    'Theme',
     'PersonQuestion',
     'PersonQuestionChoice',
     'Person',
@@ -66,16 +65,6 @@ class User(AbstractUser):
                 self.username)
 
 
-class Theme(models.Model):
-    """
-    Project theme within which a :class:`Person` works.
-    """
-    name = models.CharField(max_length=255, blank=False, null=False)
-
-    def __str__(self) -> str:
-        return self.name
-
-
 class PersonQuestion(Question):
     """Question which may be asked about a person."""
 
@@ -180,9 +169,6 @@ class PersonAnswerSet(AnswerSet):
                                  blank=True,
                                  null=False)
 
-    #: Project themes within this person works
-    themes = models.ManyToManyField(Theme, related_name='people', blank=True)
-
     #: Latitude for displaying location on a map
     latitude = models.FloatField(blank=True, null=True)
 
diff --git a/people/templates/people/person/includes/answer_set_full.html b/people/templates/people/person/includes/answer_set_full.html
index c4aac76..6b2c90d 100644
--- a/people/templates/people/person/includes/answer_set_full.html
+++ b/people/templates/people/person/includes/answer_set_full.html
@@ -31,17 +31,6 @@
         <tr><td>Job Title</td><td>{{ answer_set.job_title }}</td></tr>
     {% endif %}
 
-    {% if answer_set.themes.exists %}
-        <tr>
-            <td>Project Themes</td>
-            <td>
-                {% for theme in answer_set.themes.all %}
-                    {{ theme }}{% if not forloop.last %}, {% endif %}
-                {% endfor %}
-            </td>
-        </tr>
-    {% endif %}
-
     {% for answer in answer_set.question_answers.all %}
         <tr>
             <td>{{ answer.question }}</td>