Roberto, on the serious side, there are a couple of options you may also want to check.
- Are cameras available at a Duty-Free shop at your airport?
- on-line ordering with a ship-to address of your destination in England.
- on your flight is there a long delay or lay-over option in a city where it would be cost-effective to stop.
You don't say how long you will be in England but if it is going to be for a couple of years you may want to consider buying there strictly for warranty purposes.
Also don't practice your English by trying to read an owners manual. Some of us whose English is our first language have a hard time understanding them too.