Have completed, but would like to understand parsing of 28a. 'Maitre d' for getting central piece in oven?'. I have' heated (r?), but don't fully get it!
Thank you, Peterm. I have actually got 'heater', not 'heated' written in the grid, as I originally posted, but was not 100% on why, except that a heater is a necessary 'centre' to any oven. Thanks to your help, it now makes full sense!