This one day refresher course allows you to ensure that your SSSTS certificate is still valid. You need to attend the course before your certificate reaches its five year expiry date. Please note that SSSTS Refresher courses may run in conjunction with a SSSTS course to ensure they go ahead. If you need to refresh your certificate you may have to attend the two days but only be charged the refresher price. The minimum entry requirement is a good understanding of spoken and written English.