Thanks everyone, i dont have any friends with babies so its great to hear what other people do!
i also have found that the grobag recommendations are a bit on the cooler side.
Ds wears one of those longsleve bodysuits, a wondersuit with a 2.5 grobag. and i have one of those panel heaters on in his room usually set at 18-19 degress.
Do you think thats enough??
Ds also does acrobatics in his cot so theres no way i can use any blankets!