replace washhand basin in washroom

Hi guys ,replacing basin in my lancashire (neuvo) 2011,how do you disconnect the water pipes, is it push on pull off system, or what ,you experts have probably done it lots of times ,please help ,, you have helped me so much in the past, thanks Vinessa

It will probably be plastic connectors;  push on to connect.   There will be a collar ring round the pipe where it enters the connector.   To disconnect, grip the main body of the connector, push the collar ring in towards the body of the connector, and then pull the pipe out.