A British couple have revealed how they slashed £20,000 from hotel costs while travelling. Mike Lucas, 33, and his partner Emily Gillingham, 32, have spent the last four years discovering New Zealand and Australia , barely spending anything on accommodation. To achieve this, the resourceful pair house-sat for people - occasionally for months on end - which meant they avoided paying for hotels and Airbnbs. They utilised the platform Trusted House Sitters, a site where property and pet owners