Guests include Ffestiniog & Welsh Highland Railways Paul Lewin, clinical epidemiologist at Queen Mary University in London Dr Deepti Gurdasani, Cynon Valley Labour MP Beth Winter, Lucy Fisher - deputy political editor at the Telegraph and Professor Trevor Taylor - research fellow in defence management at the Royal United Services Institute, journalist Stephanie Vandenberg, Steff Mastoris - head of the National Waterfront Museum in Swansea and communications consultant and trainer Sara Robinson.