The story at the heart of a new BBC One prime-time drama, Care, which aired yesterday evening at 9pm, is too often the stark reality for countless people at the mercy of a broken social care system, just like Megan Jones, a mum of three from Carmarthen. The powerful drama – inspired by the real life experiences of scriptwriting legend Jimmy McGovern’s fellow writer Gillian Juckes – follows single mother Jenny (Sheridan Smith), suddenly thrown into caring for her…