intellectual property? - website code

[CaNsA]

Long story short,

Back in 2009 I charged a company a fair amount for the:-
"Domain Registration, 12months hosting, Design and creation of Company website."
Thats the only paperwork there is, it was on the invoice I sent them.

The company have moved to another web-designer.
I have released control of the domain name as that belongs to them.
The web-designer has asked me to release all the website code and images.

I am happy to release the images as they were provided to me by the company.
Do i have to release the code?
Is it mine to keep as my own intellectual property?

Cheers peeps.

 

[CaNsA]

They are getting a new website from this other web designer, so i dont know why they would need it.

 

[CaNsA]

Good point.

The client did pay me on time.
But on the other hand they have hosted the site on my server free of charge for the past 2yrs. I done this out of the goodness of my heart cos I'm a nice guy and all that jazz.

Another reason why I am reluctant is some of the code is from my personal "code library". I would remove the code before releasing the site but there is far to much for me to go through.