You are making a business trip to the UK and will stay in corporate housing, you want your husband and child to accompany you...
Can he mention that he will be staying with me at my office provided
accommodation?
Yes, if he is staying in corporate housing provided by your employer, he should write it down.
Also, should he mention any accommodation costs?
If there are no accommodation costs that he will bear, then he should 0, otherwise he should report what he expects to pay.
What should he write in living expenses?
He should calculate the expenses that he will pay and put the result on his application.
Other notes
- He should put your GWF number in the remarks section of his
application. Same with your child.
- Make sure the company agrees that extra guests will stay at their
housing, especially if there are children involved.
- If he claims to be employed, then he should submit bank statements
per
Should I submit bank statements when applying for a UK Visa? What do they say about me?
- For similar types of questions, use the natural meaning of the
words to formulate an answer. There are no 'trick' questions on the
form and they all can be answered in absolute terms.