It is far from perfect but Searchy is worth a look. It is a metacrawler search-engine that uses:

Altavista UK
Google.co.uk
Yahoo.co.uk
Lycos.co.uk
Overture UK
Hotbot.co.uk
Aol.co.uk
Msn.co.uk
Mirago.co.uk
Miva UK
Ukindex.co.uk
Turbo10.com
BBC.co.uk
Askjeeves.co.uk
Webfinder.com

http://www.searchy.co.uk/

The international version is at:

http://www.searchy.com/