[arjoll]

The Fidonet Nodelist was always a good place to start, but looking at it now none of the Fidonet nodes in the UK have a listed phone number.

Region,25,United_Kingdom_&_Ireland,United_Kingdom_&_Ireland,Vince_Coen,-Unpublished-,300,XA,CM,IBN,IFT,INA:applewoodbbs.linkpc.net,INA:81.174.171.9,U,REC
;
Host,250,British_Net,United_Kingdom_&_Ireland,Vince_Coen,-Unpublished-,300,CM,XA,IBN,IFT,INA:applewood.linkpc.net,INA:81.174.171.9
,1,Air_Applewood,Hatfield_Hertfordshire,Vince_Coen,-Unpublished-,300,XA,CM,IUC,IFC,IFT,ITN,IBN,INA:applewoodbbs.linkpc.net,INA:81.174.171.9,U,SDS,REC,ENC
,2,The_Killing_Ground,Wrexham,Neil_Williams,-Unpublished-,300,MO,XX,IUC,IBN,INA:bbs.zeusdev.co.uk
,4,Unicyber_BBS,Hitchin_Hertfordshire,Gonzalo_Ordas,-Unpublished-,300,XX,CM,IBN,ITN,IVM,INA:bbs.unicyber.co.uk
,5,The_Quantum_Wormhole,Ramsgate_Kent,Christian_Sacks,-Unpublished-,300,XX,CM,IBN,INA:bbs.erb.pw
,6,Winchester_BBS,Winchester,Charlie_Camilleri,-Unpublished-,300,XX,CM,ITN:6666,IFT:6621,IBN,INA:cvdcamilleri.dns05.com
,8,Sonic_BBS,Beverley_E.Yorkshire,Louis_Northmore,-Unpublished-,300,XX,CM,IBN,INA:sonicbbs.ddns.net
,10,Air_Applewood-Parallel-Backup,Hatfield_Hertfordshire,Vince_Coen,-Unpublished-,300,XA,CM,IUC,IFC,IFT,ITN,IBN,INA:applewoodbbs.linkpc.net,INA:81.174.171.9,U,SDS,REC,ENC
,25,pavelreich.org,London,Pavel_Reich,-Unpublished-,300,CM,IBN,INA:fido.pavelreich.org
;
Host,263,Ireland_Net,Hatfield_Hertfordshire_UK,Vince_Coen,-Unpublished-,300,XA,IBN,ICM,IFT,INA:applewood.linkpc.net,INA:81.174.171.9
,1,TCOB1,Connemara_EIRE,Sean_Rima,-Unpublished-,300,CM,XX,IBN,INA:bbbs.mooo.com

There's not much out there now. My own board shut down at the end of 1995 - new wife, new house, second year graduate; something had to give and the BBS was it.