Hello BigEck and welcome to FT.

I can understand that you want to maximize your 100k CC points, but they will only convert to 10k miles, BA is a transfer partner as I see that you are in the UK. However, 100k CC points can certainly be put to good use on hotel stays. Most top of the line hotels in the CC portfolio are around 60-70k points, which means just one hotel night, however, some of their mid-level hotels are around 30k-50k, 2 or 3 hotel nights, and their lower level hotels are around 10k-20k.

I suggest you start looking at any particular destination within train or driving distance to you and see if you can plan a weekend getaway. If you plan accordingly, you can certainly make better use of the points on hotel stay as opposed to air miles.

Good luck.