Although to be honest, im not sure the online thing will let you tax it after it being sorned so long.
took in it in early and it passed with one advisery but the mechanic thinks it has a stuck vavle and wants to take the head off and replace a couple or one valve
Depends if you feel lucky, punk...well do you?
You could tax online, print off the receipt and if stopped show it to plod...live on the edge!!