Instead of manually adding .htaccess for all your categories, you can use this plugin to remove the /category/ from the URL, so in most cases, it should match with Bloggger’s:

https://wordpress.org/extend/plugins/wp-no-category-base/

redirect 301 /posts/feeds/default https://www.example.com/newfeedlocation

No guarantees, but you can try and test it out.

Thanks a lot for all your help, much appreciated. I only have one question left – can you redirect a feed to point to a new feed via the .htaccess file?

I lost a tonne of subscribers because my old feed no longer works (example.com/posts/feeds/default) and if possible I want to redirect subscribers at that address to the new feed.

Thanks again.

About the all in one SEO plugin, I’m not sure how it affects permalinks. Maybe it would be a good idea to post on the support forum and find out exactly what that feature does.

Also will there be a problem with search engines if I turn off the blogger blog being listed in search engines, considering they have the same address?

And finally, I’m thinking of installing the All in one SEO plugin for WordPress. However some of the literature implies it ‘optimizes permalinks’. Does that mean it will change my permalinks or something? I spent hours and hours editing them all to match old Blogger ones, would hate the plugin to delete all that!

Thanks for all your help.

As for avoiding duplicate content, you should do as you suggested, choose the option in blogger to not have the site listed in search engines. That option will likely add a noindex/nofollow to all pages in your old site.

Regarding a sitemap on the WordPress version of your site, have you installed a plugin to generate one? If not, install one such as the ‘google sitemap generator’.