0333 numbers

Can anyone help...
I'm a tad confused and wish Labara had a list of numbers that a free to use, but no...
So can anyone confirm that 0333 are free to use with labara and how do I find out for future reference, where a simple list of free numbers are on Labara site with please...NO GOBBLEDLYGOOK?
Cheers

See below

https://www.lebara.co.uk/en/rates.html

Superuser25
Thank for this reply
I had noticed this info in regard to 05. 07, 08, 09 but I can't see anything about 03 numbers so still none the wiser.

If you scroll down it tells you
UK landline calls include numbers starting with 01, 02 (excluding Jersey, Guernsey and Isle of Man landline numbers and other non-landline 01 and 02 numbers) and non-geographic numbers starting with 03.