Can anyone help me

[Laurajrendell]

I have a Vauxhall signum and since the battery went flat I can’t get the instrument cluster to work again, I took it to Vauxhall but they weren’t very helpful has anyone else had this problem and if so how did you fix it. 

[Vauxhall Owners Club]

I would be tempted to disconnect the battery negative terminal (assuming it is fully charged already) and leave it off for 15 minutes then reconnect. 
See if that reinitialises the instrument panel then