Which product would you recommend for bud rot? (should be available in the UK)

I just encountered my first bud rot problem with my Blueberry plant in my cab & I wont allow it to happen again. My air flow is very good, temps at 25-27C & humidity at 35-45% so the environment is not bad & it wasnt due to pests.

So which product(s) would you recommend I use for mould or bud rot?

Just keep those temps and air conditions and you should be right.

Stay away from additives that promise to harden or fatten buds.

Trim the bottom leaves up so that there is a good 4 inches of cleared stem before the first set of leaves.

Don't use growth inhibitors to grow short plants, your buds need to be more than a foot from the wet soil top.

Also you can fortify your soil with trichoderma which will help your plant fight botrytis right from the start.