Claud Butler San Remo

For spares/repair… Claud Butler San Remo with Sora 8 groupset. An issue with the chain transferring power to the wheel intermittently. Needs a service there-after. Have had the bike since 2003 when I bought it as a teenager before my growth spurt, but it's too small for me (183cm), and can’t find the frame size on the bike. (Would prefer to keep the Look pedals as I am in the market for a new bike.) Located 25m north of the city. With enough notice, I can borrow a larger car and bring it into town.