Boiler pilot for Vulcan Continental?

Hi,

I have a very old system with a vulcan continental boiler. My water heats up with an electric switch, I also have a cylinder.

The problem is my boilers pilot light won't stay lit. I can ignite it but as soon as I let the Grey button go it switches off. I've tried holding it for over a minute too, but still no luck.

My system is due for a change as soon as my grant application goes through, but I desperately need to get this up an running as my house is freezing.

Can anyone please help!!!

Kind regards