I'm not sure what your complaint is.
The old £24.99 500K service became 700k and will now be 2Mb, the upload speed increases from 128K to 200K.
The old 1Mb service becomes 3Mb and the upload speed increases from 256K to 300K.
It appears you are comparing the 'old' 1Mb (1Mb down 256K up) service at £37 per month with the new 1Mb (1mb down 100k up) service costing £17.99. Whereas the new 'equivalent' service is the 3Mb down and 300K up.
Or have I missed something?