UWIC are all-but-confirmed as champions of Division One East - despite not taking to the field last weekend.
With the students out-of-action, second-placed Bargoed had the chance to close the gap at the top to two points heading in to the final weeks of the season.
But they were smashed by rivals Bargoed in a high-scoring thriller, which leaves the race for second wide open.
The hosts ran-in seven tries through Ashley Norton, Rhys Humphreys, Ricky Cochlin, Adam Cullen, Lee Williams, Gareth Dare and Jamie Howells.
Llanharan replied through a brace-apiece by Elliot Foiles and Lee Thorne, but they were well beaten in the end, 52-31.
Caerphilly were relegated after they were destroyed by Blackwood at Glan yr Afon Park. Gareth Price and Mark Birkraer braces were among the nine Blackwood tries as they sealed the visitors' fate with a 61-7 triumph.
Things are getting tight for the second relegation spot, and Ystrad Rhondda took a huge step towards safety with a fine 35-17 victory over
Tredegar. Shaun Robson bagged a double, and Nathan Hughes, Alex Webber and Mazin al-Azlani also touched-down for the hosts.
They are now level on points with Beddau, who played out a thrilling 32-32 draw with Merthyr.
Lewis Jones and Viv Owen both crossed twice for Beddau as they sealed what could turn out to be a precious two points.
Bedlinog can now begin to look ahead after confirming their safety with a 26-17 victory against Rumney. Martin Luckwell, Phil Cocharan and Martin Jones scored the hosts' tries.
Builth Wells pulled off one of the results of the season in Division One West as they beat third-placed Narberth, 19-17.
Tries by George Jenkins and Andy Garrod for Builth were cancelled out by scores for Michael Thomas and Nick Clancy for Bonymaen, who led 17-16 with two minutes remaining. It was then left to Builth star John Thurston to slot over a late penalty and seal a famous victory for the hosts.
That result also saw Whitland confirmed as second place finishers, despite them being given a lesson in running rugby from champions Tonmawr.
Scores from Juan Socino (2), Tal Selley, Gareth John and Darryl Harvey, plus a penalty try, saw Tonmawr to a 45-20 victory at the Memorial Ground.
Bridgend seem to be heading for safety after they beat Carmarthen 32-12. Tom Grabham, Lloyd Peers and a Matthew Morgan double saw them to an important bonus-point triumph.
Felinfoel sealed their safety with a 43-23 victory at relegated Cymllynfell and Bridgend Athletic beat Corus 44-24.
Wales reached their first semi-final since 2013 in the opening round of this season's HSBC World Rugby Sevens Series in Dubai. WRU TV's Graeme Gillespie recaps on what proved to be an eventful tournament
Wales and Ospreys back row James King, who came through the North Wales age grade system, nominated North Wales Regional Community Rugby Manager Marc Roberts, in the WRU's 'Diolch' initiative where squad players thanked those who played a part in their rise to the top.
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series