Is it possible to call the API and find out what the next programme that is next on the current channel but use the REST function in home assistant?
I want to make a picture elements card showing current programme and next.
Many thanks
Maybe the following will get you started.
I played around a little bit with Python and will give some ideas what to look for.
>>> g = requests.get('http://192.168.4.2:8089/devices/ANY/guide').json()
>>> g[0]['Channel']
{'CallSign': 'WCBSDT', 'Categories': ['directv'], 'ChannelID': 'CBS-WCBS', 'DeviceID': 'M3U-DirecTVStreamTuner', 'Favorite': True, 'Genres': [], 'HD': True, 'Hidden': False, 'Image': 'https://raw.githubusercontent.com/tv-logo/tv-logos/main/countries/united-states/us-local/cbs-2-wcbs-us.png', 'Name': 'CBS', 'Number': '2', 'Station': '16689', 'Tags': []}
>>> g[0]['Channel']['Number']
'2'
>>> current_program = g[0]['Airings'][0]['Title']
>>> current_program
'Entertainment Tonight'
>>> next_program = g[0]['Airings'][1]['Title']
>>> next_program
'FBI'
This is great! 
Thanks for replying so quickly. I'll have a play with it later. Much apprenticed.