Dear Valerio and other authors,

Thank you for providing comprehensive responses to the reviewers' comments, and providing some additional figures in some cases and text to clarify things. I spotted a typo (or missed something in the text), and just had a couple of things I'd like clarifying, and possibly some text added, as follows:

Figure 12. In the caption what is CH3O2c? (is the c supposed to be there)?

In Figure R1 (in the responses, in the paper/supplementary also), for OP3 and for SOAS why is the modelled OH significantly HIGHER than the OH measurements? In the case of OP3, the box model result was considerably less than the measurements but it seems to be the other way around here for the UKCA model? In the responses to one reviewer there is significant discussion of OH being considerably underestimated by the model for some remote environments, so the fact that for OP3 (remote) the UKCA model is larger than the measurements seems to stand out. Can a few words be added to comment on this?

The RO2+OH discussion of the product channels and global impacts on HOx, methanol etc. is a little tangential to a paper on OH reactivity. However, given a discussion on the impact on OH reactivity of these reactions is certainly warranted, and the model has those additional outputs, I am OK with it being included here. But it is important to make the links.

Best wishes,
Dwayne (co-Editor)