No.
The bike is nothing special, Hi Ten frame low quality components it's never going to set the world on fire. I'd put it's value at around £70-£80 in good condition, put it on Ebay after restoration and you may get silly money for it but I'd be surprised if you got more than £100 personally.
However if you wish to keep the bike and it is because you love the way it looks and rides then I suppose it would be worth it, but I'd put the money to something of better quality if I were you.
Nice workshop though! What is it's function? Bicycle workshop? There look to be some quality MTB's in there.