This week's competition begins in Newquay in Cornwall, at Avalon Guest House, where the owners' taste in lime green decor does not prove as relaxing as planned for the guests.
The hoteliers spend the night at the Bear Inn at Wincanton, Somerset, where ex-Army man Matt Garvin takes them for a day of survival training - and as a trained chef, hopes to serve up a perfect breakfast.
The rivals head to Bournemouth, where Chris and Nicky Horton run the Chelsea Hotel. For entertainment, they treat the guests to a day on the water - but the weather is against them.
The last visit of the week is to The Holford Arms in Tetbury in Gloucestershire, where Will Robson and Loz Cooper plan to put their pub's prized produce into the spotlight
The contest that began at Avalon Guest House in Cornwall sees the B&Bers meet up to air their grievances from that stay and the three others that followed. Two sets of B&Bers have an argument over breakfast comments, while facilities failures prove to be a big point of contention. After the disagreements are settled, the payments are revealed and the winners are crowned.
This week's competition kicks off at Doghouse Margate in Kent, Fe and Mel's dog-friendly retreat. But their minimalist approach disappoints some of the guests.
Paul and Debbie welcome their rivals to the New Inn pub in Winchelsea, East Sussex, where they push the boat out during an afternoon at a nature reserve, followed by a relaxed evening over drinks, only to jeopardise their chances with delays at breakfast.
The guests arrive at the King's Head in Lewes, East Sussex, where Penny and Emma are proud of their luxury service. But Dave is not feeling so pampered by the lack of tea bags.
The B&Bers head to King's Lynn in Norfolk for the week's final visit, where Dave and Emma host at Stuart House Hotel. Penny and Emma are left feeling blue when they arrive and make a shocking discovery in their toilet. There's a mixed reaction when the hosts treat everyone to a boat trip, with one guest in particular struggling to find their sea legs.
Payment day finds Fe and Mel from Doghouse Margate wasting no time in asking Dave to spill the tea on the comments he left them. The New Inn hosts Paul and Debbie want to clear the air with Penny and Emma, who themselves feel that the feedback regarding their breakfast baskets at the King's Head was unfair. Finally, Stuart House Hotel duo Dave and Emma are keen to find out why one of their guests had an unpleasant night's sleep.
The competition begins at B&B at No 3 in Market Bosworth, Leicestershire, where disappointments include issues with the bedding, refreshment problems and a breakfast bombshell.
The best-value B&B contest continues at the Bull Hotel in Stony Stratford, Buckinghamshire, where Ian and Bev are not impressed by the decor, and breakfast is a topsy-turvy affair.
The hoteliers stay at the Chequers Inn in Battle, East Sussex, where Shaun and Kelly Filsell hope the historic surroundings and gourmet breakfast will trump their rivals.
The week's final visit is to Hastings House in St Leonards-on-Sea in East Sussex, where hosts Ian and Bev Jarvie are determined to provide an upmarket experience for their guests. Noreen and Chloe, however, are left feeling decidedly rough by the towels in their room.
The rivals reunite to discuss their feedback and there are plenty of grievance, not least Mac and Jo wanting to get to the bottom of Ian and Bev's dressing gown comment. Room service, dusty rooms and coarse towels are all debated before the payments are revealed and the winning B&B is crowned.
The first of this week's destinations is The View in Tynemouth, where guests take a a picturesque steam train journey, but are less than happy to be sharing a bathroom.
The best-value B&B contest continues at Northern Hotel in Angus, where everything is going great for Pawel and Joanna until breakfast time, when the hosts crumble in the kitchen.
The rivals stay over at the Kirkstyle Inn in Dunning, Perth, where the quirky design and a leaky ceiling do not work in host Jess's favour. Can she swing things round at breakfast?
The week's final visit is to Hazeldene Guest House in Perth, run by hospitality veterans Rob and Glenda. Jess isn't awash with praise for the bathrooms, but a tipsy trip to a whisky distillery puts everyone in good spirits. Breakfast is also a hit, but the hosts have a nagging feeling that one B&Ber's feedback could make for difficult reading.
The B&Bers confront each other about their stays at The View, Northern Hotel, The Kirkstyle Inn and Hazeldene Guest House. There are some frosty heating comments and breakfast bombshells, before the payments are revealed and the winners announced.
The first destination of the week is the Horseshoe Hotel in Egton Bridge, North Yorkshire, where a fancy machine causes confusion but breakfast and eco toiletries prove a big hit.
The B&B battle continues in Market Bosworth at the Dixie Arms, run by Alex, whose blingy beds impress two of the guests. However, not all of the facilities are quite as successful.
The third visit of the week is to Bradbury's of Blackpool, where former flight attendant Matt is hoping to change his guests' perceptions of the seaside town.
The final visit of the week is to Little Oakhurst, in Stonyhurst near Clitheroe, run by husband-and-wife team Andy and Joanne. The guests are immediately captivated by the stunning location, with views over the Lancashire countryside, though the optional and additional breakfast brings some mixed reviews. At feedback time, it becomes clear that glamping isn't for everyone.
There's plenty of score settling to be done on payment day, as the B&Bers dissect the week, before the payments are revealed and the winners are announced.
The first destination of the week is Becketts in Southsea, Portsmouth, where parking problems, a duvet disaster and a noisy night leave host Terence facing less than perfect scores.
At The Westby Guest House in Boscombe, Duncan and Jessie have a systematic approach to running a B&B. Although the rooms are impressive, Duncan's strict house rules soon leave a sour taste. [S]
Paul and Tracey host at Newell Restaurant and Rooms in Dorset. Terence is taken with the blissful bedding, but Duncan's substandard slumber and the communal coffee zone prove controversial.
The final visit, to Lydcott Glamping in Cornwall, is hosted by Emma and Rich. All the guests are taken with the spectacular surroundings but less so with their cabins and the DIY breakfast.
The B&Bers meet up on payment day to settle their differences. There's plenty of finger pointing to be done, before the payments are revealed and we find out which B&B has won the week.