Thank you all for your comments, I was not expecting so many responses.
I work for a global stock market listed solutions provider to manufacturers. So, fairly conservative and male dominated. I am a senior manager for the region, and my direct reports are customer facing, so mainly wear corporate kit with logo. I work in the office and people dress to different degrees of smart. Managers (all men) wear a blazer with smart trousers. This has been my uniform too last year - dark jeans, kitten heels and a blazer, with a cami or blouse underneath. Or a leather skirt with a shirt or jumper. Do not like cardigans, never owned one. Have no issues with bare arms - they were acceptable for Mrs Obama, they will not raise eyebrows here. I am a slight pear shaped, petite size 8, and wide leg trousers do not suit. My best silhouette is full length straight trousers with volume and structure on top. I can wear most dress shapes, and for summer would love some bold colours and simple forms, feminine. To wear with nude, white, taupe or black kitten heels. The whole Scandi simplicity does not appeal. I have looked at the Fold but it also seems like pricey Apprentice / The Split solicitor vibes. Me+Em seems too long. So, what is a woman to wear to work in the summer?