Transferring content onto different domain – redirect old links?

Hi Folks,

I’m due to transfer a load of content from several websites into one wordpress site, all have different structures and content.

Once all the content is in there and the site is ready to go, I need to switch the old domains off – how do I redirect old url’s picked up in google to the current site, is it possible? and could I just link back to archived content using the ip address?

The old sites will be online just the domain switched off.

For example, a old url in google would be:

https://www.oldsite.co.uk/index.asp?page=1

Could I redirect this to the archived site somehow? something like:

https://11.22.44.55/index.asp?page=1

Any advice or help much appreciated. Thanks