mrswoo
In addition to thermal vests and thick fleecy tights I wear cashmere wrist warmers indoors as well as outside and they really seem to help keep me warm.
The wrist warmers are from a company called Turtle Doves and are made of recycled cashmere from jumpers etc. They also make fingerless gloves, hats, and wraps in beautiful colours.
If your budget won't run to £32 for wrist warmers, cut the feet off a pair of warm socks that have gone through at the heels, and wear the tops on your wrists. If you tuck the cut ends up your sleeves, no-one will recognise them, and if you don't care about looks, cut a small hole for your thumb to turn them into fingerless gloves. (The socks-into-fingerless-gloves wheeze is also good for keeping a white dressing clean on the back or palm of your hand - or a grandchild's)