If i wanna make exchange banner

what’s the best way to make echange banner and links with websites from london

Could you clarify what you mean? It’s not really clear. Are you asking for a link exchange? If so, you can request those through the SitePoint Marketplace.

do you want to run your on banner exchange? there are several script that can do this for you, just use hotscripts or google it
but the hard part is finding sites that are illing to exchange links ith you

i mean some one exchange banner with me i put his banner on my site and he post my banner too

all you have to do is contact related sites

And in what niche are you working?