Use the district line tofrom hammersmith for alternative route does this mean the station is closed completely. The first which is the preferred option is that the cost of stepfree access may fall within your criteria for your 200 million stepfree access funding.
image source https://www.europebreakingnews.net/tag/chilton-library-free-access/
image source https://airbnb.design/designing-for-access/
image source https://www.theo2.co.uk/visit-us/accessibility
