This weekend, BT Belfast's Gareth McKittrick undertakes his personal challenge to climb the tallest mountain in each of Scotland, England and Wales - all within 24 hours!

The three nations' mountains are:

England - Scafell Pike, 978m
Scotland - Ben Nevis, 1345m
Wales - Snowdon, 1085m

Gareth, who climbed Kilimanjaro last year, explains that he's taking on this weekend's challenge 'just for the craic'.

Gareth is kindly encouraging people to support local research charity Leukaemia and Lymphoma NI via the #TimPageFitForLife project - donation link to LLNI here.

There are about 140 types of blood cancer, with 34000 new cases each year in the UK. More information about the crucial research that LLNI do is here.

More information about this weekend's National Three Peaks challenge is here.

Thanks to Gareth for support, and best wishes for this weekend's climbs!