https://www.bbc.co.uk/news/uk-politics-47410564Independent Group Transport spokesperson is
Angela Smith,
MP▸ for Penistone and Stocksbridge - brief career background at
https://en.wikipedia.org/wiki/Angela_Smith_(Sheffield_MP) . I don't see a great deal of Transport in her past, and her portfolio also covers local government and housing, and energy, environment and rural affairs.
Should the group grow significantly in numbers, I would expect the multi-disciplined portfolios to be split down as Angela seems to have an awful lot on her plate!