I had one of these & the enamel inside came off after about 9 months. Amazon did replace it no problems but not great quality.
Only 20L & 700w but does the job!... https://www.ebay.co.uk/itm/ESSENTIALS-C17MW14-Solo-Microwave-White-Currys-/121975484412?hash=item1c664e2ffc
I’m looking for a cheaper microwave for work if anyone can help, doesn’t need to be branded