NumberFormatter with "£" is realy to realize?

Hi. I need to format the values of some columns in the monetary format ‘£0.00’. But £ is not recognized, unlike $.

bokeh_formatters = {
    column: NumberFormatter(format='£0.00') for column in CURRENCY_COLUMNS

Can someone suggest a solution?
There is a link to money format in the documentation, but it is not entirely clear how to apply it