feat(peer_review): add note about RAP Code Review Buddies Network (#128)

Author: amyheather

pages/sharing/peer_review.qmd

@@ -168,6 +168,18 @@ If you don't have anyone internal who can review your code, there are other opti
 
 The key is to find someone willing to try out your code and give honest feedback - even informal review is valuable.
 
+<br>
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+::: {.callout-tip title="NHS-only: RAP Code Review Buddies Network"}
+
+If you work in the NHS, you can make use of the **RAP Code Review Buddies Network**.
+
+This is an initiative run by The Strategy Unit which pairs up people who code in the NHS, to arrange to meet up online and talk through some code you have written.
+
+You can [find out more here](https://github.com/The-Strategy-Unit/RAP_Drop_In/wiki/Code-Review-Buddies-Network).
+
+:::
+
 ## What should reviewers look for?
 
 Reviewers don't need to check everything at once. The most important starting point is to see if the code can be set up, run, and produce the expected results. From there, you can look for improvements in quality, structure, and reproducibility.