It's a bit of a red herring to say "He's worth £48 million".
Yes, he may be worth £48m, but unless he is SPECTACULARLY ill advised, that will not be sitting around in cash, ready to be paid to staff.
It will be tied up in property, which he'd have to sell before he can pay staff. I don't think I need to point out this isn't exactly a thriving time for the property market.
It will be tied up in companies, which he would have to liquidate before he got the cash. So in effect laying others off to pay his restaurant staff.
It will be tied up in investments, which have absolutely tanked over the last couple of weeks.
It will take the form of bonds and other debt issued, which he'd have to recall from other companies first. If they're going into liquidation and struggling, this is not something they will be able to pay back to him easily.
It will take the form of long-term ISAs or bonds, which can't be touched for X amount of years.
Cash which he can actually access right now to pay staff will be minimal, assuming he has any financial sense. I don't know how many staff he's got or how long he'd want to pay them for but even if he emptied his cash accounts he wouldn't have enough to pay them for very long.
People always do this with celebrities, they see a net worth figure and assume it's easily accessible cash. Only if you're an idiot would you keep £48m, or £100m, or whatever it may be, in cash.