I am no fan of CCS, but the £22bn is across 25 years.
I don't think that spending less than 1bn a year to research better methods of carbon sequestration is a bad idea, and it definitely won't meaningfully change the need to drastically reduce the amount of carbon being emitted in every one of those 25 years.
How can I confident in that statement? Because if it would be a meaningful reduction, you'd see a shit load more being spent given just how inexpensive that would be in comparison to the cost of transition and abandoned O&G assets.
Edit: typos