Hi, I don't know Chelsea & Westminster, but I was in my late 30s when I had DC1. I was offered induction on due date because I had high blood pressure. Scans had shown DC to be okay and a normal size.
I chose to wait. Scan at 40+2 showed insufficient liquor. Induction scheduled for 40+4. I could have had ELCS, but wanted shorter recovery time. Ended up with EMCS, and even longer recovery time anyway.
You may find that as you have had VBs, the hospital will want to steer you towards induction. However, they should make it clear that ELCS is available. If not, ask them about it!
If you decide to consider induction, ask the hospital what percentage of their inductions end in EMCS.
Having seen the effect of a failing placenta on my baby, I regret not taking the induction on due date. If I had been more aware of the risks, I would have taken the induction on due date. Baby survived and is now a healthy toddler, but was in a poor state when born - very thin (2nd centile) and shorter than expected. Lots of support needed to get weight and length growth on track including twice-weekly HV home visits. DC1 is now a tall (91st centile), slim (25th centile) toddler, but it has been a long hard slog that I put down to getting a bad start.
IMHO you are right to consider ELCS to protect your baby.