[Fixed]-Python, django, sending data to a template

Just expanding my comment above with how to use the data in template:

You can send your data within render:

return render(request, "oncall/rota.html", {"policies": objPolicyData['escalation_policies'])

Then, in your template file, you can do something like this:

{% for policy in policies %}
    {% for objOnCall in policy.on_call %}
        <p> Level: {{ objOnCall.level }} </p>
        <p> Start Time: {{ objOnCall.start }} </p>
    {% endfor %}
{% endfor %}

UPDATE

According to the your last update to the question;

You said,

however the dictionary is currently not updating, its only
adding/editing the last value

This is right, because you don’t have an array contains your policy objects. You only set the last value in the loop to the dictionary. This is why you are getting only last object.

This should do the work;

# Create your views here.
def index(request):
    ### Get all the Polices ###
    policies = []
    for objPolicy in objPolicyData['escalation_policies']:
        strPolicyName = objPolicy['name']
        policy = {}
        policy['name'] = strPolicyName
        if strPolicyName.lower().find('test') == -1:
            policy = {}
            policy['strPolicyName'] = strPolicyName # add policy name here
            policy['objUsers'] = [] # define an empty array for users
            for objOnCall in objPolicy['on_call']:
                obj['strLevel'] = objOnCall['level']
                obj['strStartDate'] =  getDate(objOnCall['start'])
                obj['strStartTime'] = getTime(objOnCall['start'])
                obj['strEndDate'] =  getDate(objOnCall['end'])
                obj['strEndTime'] = getTime(objOnCall['end'])
                objUser = objOnCall['user']
                obj['strUsername'] =  objUser['name']
                obj['strUserMobile'] = getUserMobile(objUser['id'])
                policy['objUsers'].append(obj) # add each user to the users array belongs to this policy object

         policies.append(policy) # and finally append final and prepared policy object to our main policies array.

    context = {"policies": policies}
    return render(request, 'oncall/rota.html', context)

Now you can do anything you want with this array inside a for loop in template. (see my above example)