Dec 30 (Reuters) - Canada's main stock index opened higher on Wednesday, supported by gains in materials stocks, while Britain's approval of another coronavirus shot lifted sentiment around a vaccine-led global economic recovery next year.
* At 09:30 a.m. ET (14:30 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was up 21.58 points, or 0.12%, at 17,565.01.