I bought M&S Steam cuisine green thai chicken. After two to three minutes it started to steam and make a weird noise as described by others. At that point it EXPLODED in the microwave, destroying both the dinner and the microwave (it tripped the circuit and the microwave will not turn on again). So a simple dinner has cost me about £100 IN BROKEN MICROWAVE. Buy at your peril. I would be interested to hear if others had had this kind of problem.