To not switch mortgage in anticipation of BoE base rate decision

[MouldyCandy]

Our fixed rate mortgage is due to expire at the end of July. Having been caught out before when we switched early and missed a base rate drop, I'm keen to avoid a repeat.
The Bank of England are meeting on 7 August and a drop in interest rates is potentially forecast.
Can I move to a standard rate for one month and arrange a fix after 7 August?
Our mortgage is with Nationwide.

You can buy if you look several banks and building societies have already anticipated the drop and cut mortgage rates. Look at Barclays they have just cut all fixed rate products.

As above, where the market expects rates to drop product prices will have that factored in.

Can I move to a standard rate for one month and arrange a fix after 7 August?

You can yes. How much will this save you compared to going straight into a fix?