the cc logos are an image served by paypal:
<img border="0" alt="PayPal Acceptance Mark" src="https://www.paypalobjects.com/webstatic/mktg/Logo/AM_SbyPP_mc_vs_ms_ae_UK.png">
you can see other paypal logos available for the UK here:
https://www.paypal.com/uk/webapps/mpp/logo-center
and substitute the src with the one you wish to use.