Guardian

[Mampara]

22a Odd service switches rumbled (10) ?i?c??????

25a Rigid, somehow I breathe after swallowing large ball (9) ??????b?e

13d Unaffected, prone to hug Rev Wild (10) ?m?e??????

11a Radium grows inert, being responsible for composition of air (10) s???????e?

[octogenarian]

22a Discovered-----------anagram of odd service

[bibblebub]

22a discovered

[Calibax]

13d Impervious?

[Mampara]

Thanks both of you.

[octogenarian]

25a immovable ?

[Mampara]

Thanks octogenarian & calibax for your suggestions.

[kayakamina]

I think these are from the Genius crossword.

11a Songwriter

25a Dirigible