Yes,you can take a coach from London to Istanbul,Turkey,then another to Alanya,Turkey then the ferry to cypress from Alanya.....or you could drive to Alanya and then take a ferry.
You will need to get a ferry to mainland Europe - there are ferries to many European countries from Cyprus, but Italy or Greece are regular destinations. Once on the mainland, you can travel across land to Paris and get the Eurostar to London or to Calais or other Channel Ports to go by ferry to the UK.
by boat..
Swimming!
Yes it is possible to do this by land
Yes, Jamaicans can travel to the UK without a visa for short visits of up to 6 months.
Yes, Colombians can travel to the UK for up to six months without a visa for tourism or business purposes.
Cyprus is always 2 hours ahead of the U.K.
You can't drive from U.K to Cyprus because Cyprus is an island
The easiest way is to get a ferry from Limassol to the Greek port of Thessaloniki, and then to proceed overland to the French port of Calais either by train, coach or car. At Calais you can either take the ferry to Dover, or go by rail via the Channel Tunnel.
the travel time is approximately 12 hours
Yes
Since the UK and Italy are both a part of the European Union, you can travel visa-free to the UK if you are an Italian citizen (or vice versa).