alasdair gill reporting. omicron variant of coronavirus have come into force today meaning masks must be worn in shops and on public transport. spencer stokes has been on public transport around leeds this morning getting reaction as the rules change. please continue to wear a face covering on our trains... - the mask is back. after four and a half months, face coverings have become mandatory please continue to wear a face covering on our trains... - the mask is back. after four and a half months, face coverings have become mandatory again on public transport and in shops in england in an effort to slow the spread of the omicron coronavirus variant. on this train into leeds this morning, the majority were following the new rules, although some were not aware of the change. well, i did not know to be fair, but it does not bother me. i will wear one going forward. it's just a bit of cloth on my face. it doesn't really bother me. but i genuinely didn't know that came in today. there was maybe only a handful of p