True, 50kW seems to be the limit locally. Dependent on which route you use to approach North Walsham, ZapMap suggests:
Roy's of Wrexham (50kW, £0.62)
Old Rectory Hotel Crostwick (50kW, £0.79 - but it's BPPulse, so not preferred)
Stumpy's Way Aylsham (50kW, £0.44 [I think. E&OE])
Tescos Aylsham...