Sir Lancelot

[lizhoare]

18a Warm, friendly (12)
14d Helpful quality (10)

Any help gratefully appreciated. Thanks x

[mazie]

18a affectionate ?

[ironmonger]

14d usefulness

[lizhoare]

Thanks very much to you both. I thought usefulness was an anagram of unless fuse but I spelt exegete with an a instead of an e! Can either of you tell me if 20d is twilit? Thanks again xx