Lost keys, How to force open bike U Lock,

Hi
I am in a bit of a tricky situation and am hoping someone here might be able to help.

I locked my bike at work on Friday evening using a BBB U lock similar to this one.

I then got the train to cork and somewhere along the way lost my set of keys including house keys, car keys and of course my bike key .

The problem is that I don't have the lock spare key or the serial number on it.

So I'm stuck with the bike locked at work. Its not locked to anything so I can move it.

Does anyone know somewhere I can get it off, I'm guessing it will have to be removed by force either by cutting through it or some other method.

Has anyone had this problem before or heard of someone who had it and how did they resolve it.

In case anyone gets the wrong idea, I'm not some bike thief looking to get the lock off someone else bike. I've genuinely lost my key and am in a bit of a pickle.

Thanks