This puzzle has received mixed reviews but I have to say that I thoroughly enjoyed it. I had multiple PDMs during a steady solve and everything worked out very nicely in the end. Thank you very much, Gnomish!
On a related topic, I called the Times yesterday to cancel my online subscription and learned that there is a new subscription option costing £5 per month that gives access to all of the crosswords plus a limited number of articles. This might be of interest to others on this forum.