does anyone know of cottage agencies where you can submit 1 request to all owners?

[triplets]

Desp looking for a holiday this half term, s/catering in uk, founf 1 comp called glaven valley based in norfolk, does anyone know of any more, saves me trawling, thanks x

Do you mean you want a site where you can check availability on all properties at once?

Some companies can save you trawling if you contact them, telling them exactly what you want. e.g. I sent an email to a villa company telling them how many beds we needed in what kind of area and what dates and they replied with three places that matched our criteria.

holidaylettings.co.uk, you can make a wish list, and submit to lots of owners, keep your enquiry pretty generic, so it fits all the cottages.
Be aware the best will probably be gone, but maybe look at ones that are newly listed.
AND as an owner myself, it is VERY nice to get an e mail saying 'Thank you', even if you do not want to take it further.
I can sometimes spend a good hour replying to e mails, answering further questions, and then never hear another thing

Yes lowlevel that is what I want, will try the other suggestion too, thank you.