To answer the last poster, yes, the socket outlets used in the UK and Republic of Ireland are totally different from those used in North America. More importantly, so is the voltage.
The UK and Republic of Ireland use 230V 50Hz, the same as the rest of Europe, only the plug is different. So, you simply need to use a pin adaptor / fit a UK/Ireland plug.
UK (BS1363) plug and socket / Ireland (IS401 & IS411)
US/Canada outlet:
The US/Canada uses 110V 60Hz, totally different from Europe. If you're travelling there you need to ensure that your appliances can function on 110V 60Hz or get a transformer to step the power up to 230V. Even when you've stepped it up the frequency will remain 60Hz which can cause problems for some types of equipment. On top of that, you'll need a pin adaptor.
As for changing UK plugs for Schuko plugs, yes that is absolutely no problem. ALL appliances sold within the EU are approved to a harmonised European standard. Using an appliance with a correctly wired Schuko plug will provide the same level of protection as a local appliance has.
To be quite honest, my experience of UK/Ireland plug fuses is that they do not react very quickly to an over-current fault. For example, where I have had a short on an appliance in my house the 20amp circuit breaker blew before the plug fuse had time to blow!
British plugs are fitted with fuses because of the ring-mains systems historically used in the UK. This means that the typical British socket outlet is connected to a circuit protected with a 30 amp fuse or a 32amp circuit breaker. The appliance cord is protected by the plug fuse.
In other systems such as those used in the rest of Europe or the US, the circuit is protected sufficiently to deal with any local short circuit. These circuits will typically be protected by a 16 or 20 amp fast tripping breaker that would actually trip before a 3amp UK plug fuse had time to melt.
Just change the plugs for CEE 7/7 (Schuko)