Our office is moving. We were given two weeks ‘official’ notice. There will be half the workforce out of pocket

The lowest doing an extra 30 miles a day, while others will be travelling between 50-100 miles a day extra(one of the lowest paid having to travel an extra 100 miles a day). Does the company have to give us travelling expenses for the extra miles? If so, what is the minimum they can offer?

Any help really appreciated.
Jo Maltby