Accompanying your wife just to submit the documents to VFS is not necessary or even practical for the husbands, like you say, time off from work would be hard to get..I say this as no interviews would be done anyway, and VFS won't do anything other than collect it and then pass the documents to the British Embassy. Just make sure she has all the documents needed and always double check or even triple check everything before submitting documents. If your wife would avail the premium service, she would be done in around 30 minutes or so.
