Sandi Toksvig has urged the British government to change its visa system so more Ukrainian refugees can be welcomed into the UK.DONATE NOW: What can you do to help Ukraine?The Extraordinary Escapes star was joined by a host of UK comedians in a video message posted on social media on Friday, in which they called for Ukrainian people who have fled their war-torn country following Russia's invasion to be welcomed into the UK "with open arms".Since Russia's invasion, 22,000 Ukrainians have applied for UK visas, but just over 1,000 have been issued. I am ready to house a Ukrainian family, as are many British people.