Arms Park will now be re-branded the BT Sport Arms Park © CardiffBlues.com

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BT Sport has bought the naming rights for the Cardiff Arms Park and has increased its profile within the RaboDirect PRO12 by securing a sponsorship deal to have its logo on three of the regions' shirts.

BT already has its logo on the Glasgow Warriors and Edinburgh's shirts and has now secured similar deals for the Dragons, Scarlets and Ospreys over a three-year period in what is described as a "multi-million pound" contract. The Blues' sponsorship is not available for the 2014-15 season but the Arms Park will now have BT Sport in its title.

The sponsorship of the Arms Park follows hot on the heels of reports saying BT Sport is considering paying £20m to get the naming rights for Murrayfield.

Mark Davies, acting CEO of Regional Rugby Wales, the body which represents the four Welsh regions, said: "It's a time to celebrate the strides that the Welsh regions are making to take the game forward in Wales with real unity, a common purpose, shared philosophy and commitment to ensuring that our businesses are sustainable.

"This is a clear vote of confidence in the Welsh Regions and we are delighted to be working alongside BT, a successful global brand that can see the real value in investing significantly in our regional businesses, our 200 professional players and the rugby development structures we have in place.

"It's great to have positive news for regional rugby as we all now look forward to a new season, with a new European competition and greater challenges in our PRO12 domestic league."

Monday's announcement means BT Sport will now sponsor five of the PRO12's sides with the tournament being shown on Sky Sports next term.

We've had a great day announcing our groundbreaking partnership with @btsport pic.twitter.com/cVuXfsO3pf

— RegionalRugbyWales (@OfficialRRW) May 19, 2014