Last year approximately 60 agents left the portal every month but during April nearly 300 agents quit Rigthmove.

The portal's 75% fees cut for agents ends in just over two months' time but agents have only a small window in which to give the portal notice.

The portal now enables house hunters to filter out property listings that don't come with 3D or video tours.

Homesearch has seen the number of agents leap from 4,300 in March to over 7,000 today as the number of people hacked off by Rightmove has increased.

Andrew Goldthorpe of PropertyMutual says too many portals including Rightmove and OTM start out promising to be solely for the benefit of agents, but soon lose their way.

Iain White says that until campaigning groups such as Say No To Rightmove have a simple, unifying message for agents to focus on, Rightmove will win once more.

David Thomas and Rob Sargent claim decision not to allow shareholders to dial in via a video platform to today's AGM will prevent anyone asking awkward questions.

Claim is made by Rightmove after it canvasses buyer and sellers during webinar event it held for members of the public.