Yes, you can either use a travel plug, change the power cord for a UK one or just cut the end off and fit a UK plug.
Most laptop chargers can handle 100v > 230v input and I think the US use 115v.
It won't blow up in your face if it can't handle less than 230v as you are dropping the input voltage. It just won't work if that is the case.
The other way around would be a different story!
The only issue will be it will probably have a US keyboard meaning the £ won't be above the 3 like on UK keyboards - but if you can live with that, or use an external keyboard, you will be fine.