The duty of employers in Scotland is clear and the message has been repeatedly communicated. There's no excuse for any employer in Scotland not to know their duty. Same as for the OP's employer's clients...if they are in Scotland they too should be enabling WHF wherever possible. I'm not sure if I should be but I'm shocked at the level of bitterness on this thread.
Extracts from some of Nicola Sturgeon First Minister's Statements:
30 March: Continue to work from home if you can. That remains the default position. And employers still have a duty – if they reasonably can - to support people to work from home.
9 March: Continue to work from home if you can and as an employer that is the situation you are in remember to support, you have a duty to support your workers to work from home.
2 March: Work from home if you can – and if you are an employer, continue to support your employees to work from home
22 February: Please work from home if you can – and employers remember to support your workforce to do that wherever possible
18 February: Please continue to work from home if possible and employers, please remember you have a legal duty to support people to work from home.
16 February: If you are an employer, please understand that employees who were working from home while their children were being home schooled, should still be working from home next week, even if their children are back at school. It is of course a legal obligation for all employers to support employees to work from home as far as is possible.
15 February: Work from home whenever you can and employers, remember you have a duty to facilitate your staff working from home wherever possible
11 February: Work from home if you possibly can – and employers, please remember you have a legal duty to support people to work from home.
9 Feb: Work from home if you can – and please to employers remember you have a duty to facilitate your staff working from home wherever possible
various others similar
14 January: We are also introducing statutory guidance on employers to make crystal clear the duty of employers to enable people right now to work from home whenever that is possible.
and www.gov.scot/publications/coronavirus-covid-19-guidance-for-homeworking/