The 23-year-old Kent native is well on his way to smashing a £20,000 (€25,000) fundraising target which will see vital funds raised for the lifeboats.
When he set out 649 days ago, Ellis-Roswell planned to walk along the British coastline only, but he changed his mind and boarded a ferry to Belfast last year to add the beautiful Irish coastline to his journey.
When he finishes he will have walked the entire length of the Irish and UK coasts.
Ellis-Roswell has had many adventures along the way with strangers opening their doors to him and providing food and company for him along the way. Their kindness has seen him almost reach his target, which he now plans to exceed.
The weather had not been kind along the way, and he has pitched his tent in some stunning but remote places with the wind and the rain beating down on him. He has also battled with the toll the epic walk has taken on both his knees.
Starting his walk in Ireland at Belfast last year, he came down along the east coast before rounding the southern coastline and trekking along the Cork and Kerry peninsulas, clocking up hundreds of kilometres.
He has now crossed the border into Mayo and the sun has come out to match the hospitality of the locals to make it a special stop on his journey. Two important places for him to call in to visit have been the Achill and Ballyglass RNLI lifeboat stations, where he was made feel very welcome.
Commenting on the incredible fundraising initiative when Ellis-Roswell stopped by to visit the lifeboat crew and fundraisers with Ballyglass RNLI, the station’s volunteer lifeboat press officer Agatha Hunt said: "We were honoured to welcome Alex to our door and to hear about his adventures so far. It is incredible to think that a young man from across the water would do this for a charity which is very close to all of us here.
"Every lifeboat station and volunteer shares a common goal to save lives and help those in difficulty but it is very touching to see someone so young doing this to help in our work. I know his father, who also had great affection, for the RNLI would have been very proud of him."
Huge thanks are also due to the Broadhaven Bay Hotel, Léim Siar B&B Blacksod, Western Strand Hotel and the Kilcummin Lodge B&B who supported the young man in his walk by providing accommodation during his visit.